Finding the Fourth Proportional to 125,187.12, 172,663.99 and 86,946.72
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Solution
The fourth proportional to 125,187.12, 172,663.99 and 86,946.72 is: 119,921.02
Step by Step Solution
- Step 1: Write the proportion equation
125,187.12 : 172,663.99 = 86,946.72 : x - Step 2: Convert to fraction form
125,187.12/172,663.99 = 86,946.72/x - Step 3: Cross multiply
125,187.12x = 172,663.99 × 86,946.72 - Step 4: Simplify right side
125,187.12x = 15,012,566,727.76 - Step 5: Solve for x
x = 15,012,566,727.76/125,187.12 - Step 6: Final answer
x = 119,921.02
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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.