Finding the Fourth Proportional to 155,047,432.05, 213,974,987.45 and 85,432,794.75
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Solution
The fourth proportional to 155,047,432.05, 213,974,987.45 and 85,432,794.75 is: 117,902,508.56
Step by Step Solution
- Step 1: Write the proportion equation
155,047,432.05 : 213,974,987.45 = 85,432,794.75 : x - Step 2: Convert to fraction form
155,047,432.05/213,974,987.45 = 85,432,794.75/x - Step 3: Cross multiply
155,047,432.05x = 213,974,987.45 × 85,432,794.75 - Step 4: Simplify right side
155,047,432.05x = 18,280,481,184,022,512 - Step 5: Solve for x
x = 18,280,481,184,022,512/155,047,432.05 - Step 6: Final answer
x = 117,902,508.56
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.