Home / 137,781,007.80-206,689,226.40-68,729,107.20

Finding the Fourth Proportional to 137,781,007.80, 206,689,226.40 and 68,729,107.20

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Solution

The fourth proportional to 137,781,007.80, 206,689,226.40 and 68,729,107.20 is: 103,102,497.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,781,007.80 : 206,689,226.40 = 68,729,107.20 : x
  2. Step 2: Convert to fraction form
    137,781,007.80/206,689,226.40 = 68,729,107.20/x
  3. Step 3: Cross multiply
    137,781,007.80x = 206,689,226.40 × 68,729,107.20
  4. Step 4: Simplify right side
    137,781,007.80x = 14,205,565,998,330,672
  5. Step 5: Solve for x
    x = 14,205,565,998,330,672/137,781,007.80
  6. Step 6: Final answer
    x = 103,102,497.40

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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.