Finding the Fourth Proportional to 128,755,901.96, 177,680,681.06 and 70,809,149.96
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Solution
The fourth proportional to 128,755,901.96, 177,680,681.06 and 70,809,149.96 is: 97,715,272.07
Step by Step Solution
- Step 1: Write the proportion equation
128,755,901.96 : 177,680,681.06 = 70,809,149.96 : x - Step 2: Convert to fraction form
128,755,901.96/177,680,681.06 = 70,809,149.96/x - Step 3: Cross multiply
128,755,901.96x = 177,680,681.06 × 70,809,149.96 - Step 4: Simplify right side
128,755,901.96x = 12,581,417,990,172,470 - Step 5: Solve for x
x = 12,581,417,990,172,470/128,755,901.96 - Step 6: Final answer
x = 97,715,272.07
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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.