Finding the Fourth Proportional to 153,765.90, 212,197.19 and 84,853.76
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Solution
The fourth proportional to 153,765.90, 212,197.19 and 84,853.76 is: 117,098.32
Step by Step Solution
- Step 1: Write the proportion equation
153,765.90 : 212,197.19 = 84,853.76 : x - Step 2: Convert to fraction form
153,765.90/212,197.19 = 84,853.76/x - Step 3: Cross multiply
153,765.90x = 212,197.19 × 84,853.76 - Step 4: Simplify right side
153,765.90x = 18,005,727,947.68 - Step 5: Solve for x
x = 18,005,727,947.68/153,765.90 - Step 6: Final answer
x = 117,098.32
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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.