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Finding the Fourth Proportional to 124,608,124.40, 186,912,186.60 and 81,609,954.80

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Solution

The fourth proportional to 124,608,124.40, 186,912,186.60 and 81,609,954.80 is: 122,414,932.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,608,124.40 : 186,912,186.60 = 81,609,954.80 : x
  2. Step 2: Convert to fraction form
    124,608,124.40/186,912,186.60 = 81,609,954.80/x
  3. Step 3: Cross multiply
    124,608,124.40x = 186,912,186.60 × 81,609,954.80
  4. Step 4: Simplify right side
    124,608,124.40x = 15,253,895,099,995,164
  5. Step 5: Solve for x
    x = 15,253,895,099,995,164/124,608,124.40
  6. Step 6: Final answer
    x = 122,414,932.20

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.