Finding the Fourth Proportional to 122,718.56, 169,435.68 and 93,987.68
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Solution
The fourth proportional to 122,718.56, 169,435.68 and 93,987.68 is: 129,767.38
Step by Step Solution
- Step 1: Write the proportion equation
122,718.56 : 169,435.68 = 93,987.68 : x - Step 2: Convert to fraction form
122,718.56/169,435.68 = 93,987.68/x - Step 3: Cross multiply
122,718.56x = 169,435.68 × 93,987.68 - Step 4: Simplify right side
122,718.56x = 15,924,866,472.42 - Step 5: Solve for x
x = 15,924,866,472.42/122,718.56 - Step 6: Final answer
x = 129,767.38
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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.