Finding the Fourth Proportional to 131,538,780.51, 181,523,905.52 and 72,805,524.99
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Solution
The fourth proportional to 131,538,780.51, 181,523,905.52 and 72,805,524.99 is: 100,471,839.47
Step by Step Solution
- Step 1: Write the proportion equation
131,538,780.51 : 181,523,905.52 = 72,805,524.99 : x - Step 2: Convert to fraction form
131,538,780.51/181,523,905.52 = 72,805,524.99/x - Step 3: Cross multiply
131,538,780.51x = 181,523,905.52 × 72,805,524.99 - Step 4: Simplify right side
131,538,780.51x = 13,215,943,239,254,730 - Step 5: Solve for x
x = 13,215,943,239,254,730/131,538,780.51 - Step 6: Final answer
x = 100,471,839.47
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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.