Home / 91,909.32-137,982.04-70,862.73

Finding the Fourth Proportional to 91,909.32, 137,982.04 and 70,862.73

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Solution

The fourth proportional to 91,909.32, 137,982.04 and 70,862.73 is: 106,385.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,909.32 : 137,982.04 = 70,862.73 : x
  2. Step 2: Convert to fraction form
    91,909.32/137,982.04 = 70,862.73/x
  3. Step 3: Cross multiply
    91,909.32x = 137,982.04 × 70,862.73
  4. Step 4: Simplify right side
    91,909.32x = 9,777,784,045.37
  5. Step 5: Solve for x
    x = 9,777,784,045.37/91,909.32
  6. Step 6: Final answer
    x = 106,385.12

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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.