Finding the Fourth Proportional to 116,819,707.28, 161,260,834.17 and 72,788,460.99
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Solution
The fourth proportional to 116,819,707.28, 161,260,834.17 and 72,788,460.99 is: 100,479,004.88
Step by Step Solution
- Step 1: Write the proportion equation
116,819,707.28 : 161,260,834.17 = 72,788,460.99 : x - Step 2: Convert to fraction form
116,819,707.28/161,260,834.17 = 72,788,460.99/x - Step 3: Cross multiply
116,819,707.28x = 161,260,834.17 × 72,788,460.99 - Step 4: Simplify right side
116,819,707.28x = 11,737,927,937,197,902 - Step 5: Solve for x
x = 11,737,927,937,197,902/116,819,707.28 - Step 6: Final answer
x = 100,479,004.88
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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.