Finding the Fourth Proportional to 136,207,109.97, 187,969,781.34 and 74,331,434.07
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Solution
The fourth proportional to 136,207,109.97, 187,969,781.34 and 74,331,434.07 is: 102,579,545.31
Step by Step Solution
- Step 1: Write the proportion equation
136,207,109.97 : 187,969,781.34 = 74,331,434.07 : x - Step 2: Convert to fraction form
136,207,109.97/187,969,781.34 = 74,331,434.07/x - Step 3: Cross multiply
136,207,109.97x = 187,969,781.34 × 74,331,434.07 - Step 4: Simplify right side
136,207,109.97x = 13,972,063,408,826,526 - Step 5: Solve for x
x = 13,972,063,408,826,526/136,207,109.97 - Step 6: Final answer
x = 102,579,545.31
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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.