Finding the Fourth Proportional to 80,779,038,570.80, 121,168,557,856.20 and 74,167,062,225.20
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Solution
The fourth proportional to 80,779,038,570.80, 121,168,557,856.20 and 74,167,062,225.20 is: 111,250,593,337.80
Step by Step Solution
- Step 1: Write the proportion equation
80,779,038,570.80 : 121,168,557,856.20 = 74,167,062,225.20 : x - Step 2: Convert to fraction form
80,779,038,570.80/121,168,557,856.20 = 74,167,062,225.20/x - Step 3: Cross multiply
80,779,038,570.80x = 121,168,557,856.20 × 74,167,062,225.20 - Step 4: Simplify right side
80,779,038,570.80x = 8,986,715,970,258,530,729,984 - Step 5: Solve for x
x = 8,986,715,970,258,530,729,984/80,779,038,570.80 - Step 6: Final answer
x = 111,250,593,337.80
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Double scale
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Similar ratio
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.