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Finding the Fourth Proportional to 123,919,052.80, 185,896,293.90 and 42,041,709.40

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Solution

The fourth proportional to 123,919,052.80, 185,896,293.90 and 42,041,709.40 is: 63,068,574.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,919,052.80 : 185,896,293.90 = 42,041,709.40 : x
  2. Step 2: Convert to fraction form
    123,919,052.80/185,896,293.90 = 42,041,709.40/x
  3. Step 3: Cross multiply
    123,919,052.80x = 185,896,293.90 × 42,041,709.40
  4. Step 4: Simplify right side
    123,919,052.80x = 7,815,397,966,680,793
  5. Step 5: Solve for x
    x = 7,815,397,966,680,793/123,919,052.80
  6. Step 6: Final answer
    x = 63,068,574.12

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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.