Home / 99,389.38-137,157.28-56,972.52

Finding the Fourth Proportional to 99,389.38, 137,157.28 and 56,972.52

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Solution

The fourth proportional to 99,389.38, 137,157.28 and 56,972.52 is: 78,622.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,389.38 : 137,157.28 = 56,972.52 : x
  2. Step 2: Convert to fraction form
    99,389.38/137,157.28 = 56,972.52/x
  3. Step 3: Cross multiply
    99,389.38x = 137,157.28 × 56,972.52
  4. Step 4: Simplify right side
    99,389.38x = 7,814,195,877.95
  5. Step 5: Solve for x
    x = 7,814,195,877.95/99,389.38
  6. Step 6: Final answer
    x = 78,622.04

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.