Finding the Fourth Proportional to 172,431,407.18, 238,266,606.56 and 122,785,590.24
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Solution
The fourth proportional to 172,431,407.18, 238,266,606.56 and 122,785,590.24 is: 169,665,761.00
Step by Step Solution
- Step 1: Write the proportion equation
172,431,407.18 : 238,266,606.56 = 122,785,590.24 : x - Step 2: Convert to fraction form
172,431,407.18/238,266,606.56 = 122,785,590.24/x - Step 3: Cross multiply
172,431,407.18x = 238,266,606.56 × 122,785,590.24 - Step 4: Simplify right side
172,431,407.18x = 29,255,705,920,337,528 - Step 5: Solve for x
x = 29,255,705,920,337,528/172,431,407.18 - Step 6: Final answer
x = 169,665,761.00
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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.