Home / 91,432.20-137,148.30-75,880.20

Finding the Fourth Proportional to 91,432.20, 137,148.30 and 75,880.20

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Solution

The fourth proportional to 91,432.20, 137,148.30 and 75,880.20 is: 113,820.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,432.20 : 137,148.30 = 75,880.20 : x
  2. Step 2: Convert to fraction form
    91,432.20/137,148.30 = 75,880.20/x
  3. Step 3: Cross multiply
    91,432.20x = 137,148.30 × 75,880.20
  4. Step 4: Simplify right side
    91,432.20x = 10,406,840,433.66
  5. Step 5: Solve for x
    x = 10,406,840,433.66/91,432.20
  6. Step 6: Final answer
    x = 113,820.30

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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.