Finding the Fourth Proportional to 172,369,253.10, 258,553,879.65 and 138,357,029.10
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Solution
The fourth proportional to 172,369,253.10, 258,553,879.65 and 138,357,029.10 is: 207,535,543.65
Step by Step Solution
- Step 1: Write the proportion equation
172,369,253.10 : 258,553,879.65 = 138,357,029.10 : x - Step 2: Convert to fraction form
172,369,253.10/258,553,879.65 = 138,357,029.10/x - Step 3: Cross multiply
172,369,253.10x = 258,553,879.65 × 138,357,029.10 - Step 4: Simplify right side
172,369,253.10x = 35,772,746,650,652,948 - Step 5: Solve for x
x = 35,772,746,650,652,948/172,369,253.10 - Step 6: Final answer
x = 207,535,543.65
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.