Home / 137,988,998.70-206,983,498.05-103,551,621.90

Finding the Fourth Proportional to 137,988,998.70, 206,983,498.05 and 103,551,621.90

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Solution

The fourth proportional to 137,988,998.70, 206,983,498.05 and 103,551,621.90 is: 155,327,432.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,988,998.70 : 206,983,498.05 = 103,551,621.90 : x
  2. Step 2: Convert to fraction form
    137,988,998.70/206,983,498.05 = 103,551,621.90/x
  3. Step 3: Cross multiply
    137,988,998.70x = 206,983,498.05 × 103,551,621.90
  4. Step 4: Simplify right side
    137,988,998.70x = 21,433,476,929,612,988
  5. Step 5: Solve for x
    x = 21,433,476,929,612,988/137,988,998.70
  6. Step 6: Final answer
    x = 155,327,432.85

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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.