Home / 137,853,909.20-206,780,863.80-136,897,315.40

Finding the Fourth Proportional to 137,853,909.20, 206,780,863.80 and 136,897,315.40

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Solution

The fourth proportional to 137,853,909.20, 206,780,863.80 and 136,897,315.40 is: 205,345,973.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,853,909.20 : 206,780,863.80 = 136,897,315.40 : x
  2. Step 2: Convert to fraction form
    137,853,909.20/206,780,863.80 = 136,897,315.40/x
  3. Step 3: Cross multiply
    137,853,909.20x = 206,780,863.80 × 136,897,315.40
  4. Step 4: Simplify right side
    137,853,909.20x = 28,307,745,130,313,044
  5. Step 5: Solve for x
    x = 28,307,745,130,313,044/137,853,909.20
  6. Step 6: Final answer
    x = 205,345,973.10

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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.