Finding the Fourth Proportional to 136,207,108.36, 187,969,779.12 and 74,331,432.46
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Solution
The fourth proportional to 136,207,108.36, 187,969,779.12 and 74,331,432.46 is: 102,579,543.09
Step by Step Solution
- Step 1: Write the proportion equation
136,207,108.36 : 187,969,779.12 = 74,331,432.46 : x - Step 2: Convert to fraction form
136,207,108.36/187,969,779.12 = 74,331,432.46/x - Step 3: Cross multiply
136,207,108.36x = 187,969,779.12 × 74,331,432.46 - Step 4: Simplify right side
136,207,108.36x = 13,972,062,941,179,398 - Step 5: Solve for x
x = 13,972,062,941,179,398/136,207,108.36 - Step 6: Final answer
x = 102,579,543.09
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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.