Finding the Fourth Proportional to 128,554,387.38, 177,406,096.20 and 69,817,472.58
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Solution
The fourth proportional to 128,554,387.38, 177,406,096.20 and 69,817,472.58 is: 96,348,677.86
Step by Step Solution
- Step 1: Write the proportion equation
128,554,387.38 : 177,406,096.20 = 69,817,472.58 : x - Step 2: Convert to fraction form
128,554,387.38/177,406,096.20 = 69,817,472.58/x - Step 3: Cross multiply
128,554,387.38x = 177,406,096.20 × 69,817,472.58 - Step 4: Simplify right side
128,554,387.38x = 12,386,045,256,968,342 - Step 5: Solve for x
x = 12,386,045,256,968,342/128,554,387.38 - Step 6: Final answer
x = 96,348,677.86
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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.