Finding the Fourth Proportional to 130,351.13, 179,842.73 and 72,981.99
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Solution
The fourth proportional to 130,351.13, 179,842.73 and 72,981.99 is: 100,691.73
Step by Step Solution
- Step 1: Write the proportion equation
130,351.13 : 179,842.73 = 72,981.99 : x - Step 2: Convert to fraction form
130,351.13/179,842.73 = 72,981.99/x - Step 3: Cross multiply
130,351.13x = 179,842.73 × 72,981.99 - Step 4: Simplify right side
130,351.13x = 13,125,279,957.52 - Step 5: Solve for x
x = 13,125,279,957.52/130,351.13 - Step 6: Final answer
x = 100,691.73
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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.