Finding the Fourth Proportional to 136,905,781.05, 188,930,635.66 and 74,181,862.44
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Solution
The fourth proportional to 136,905,781.05, 188,930,635.66 and 74,181,862.44 is: 102,371,326.59
Step by Step Solution
- Step 1: Write the proportion equation
136,905,781.05 : 188,930,635.66 = 74,181,862.44 : x - Step 2: Convert to fraction form
136,905,781.05/188,930,635.66 = 74,181,862.44/x - Step 3: Cross multiply
136,905,781.05x = 188,930,635.66 × 74,181,862.44 - Step 4: Simplify right side
136,905,781.05x = 14,015,226,424,585,624 - Step 5: Solve for x
x = 14,015,226,424,585,624/136,905,781.05 - Step 6: Final answer
x = 102,371,326.59
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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.