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Finding the Fourth Proportional to 91,600.30, 137,400.45 and 75,853.90

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Solution

The fourth proportional to 91,600.30, 137,400.45 and 75,853.90 is: 113,780.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,600.30 : 137,400.45 = 75,853.90 : x
  2. Step 2: Convert to fraction form
    91,600.30/137,400.45 = 75,853.90/x
  3. Step 3: Cross multiply
    91,600.30x = 137,400.45 × 75,853.90
  4. Step 4: Simplify right side
    91,600.30x = 10,422,359,994.26
  5. Step 5: Solve for x
    x = 10,422,359,994.26/91,600.30
  6. Step 6: Final answer
    x = 113,780.85

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1.5x scale

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.