Home / 130,489.11-180,087.66-73,138.20

Finding the Fourth Proportional to 130,489.11, 180,087.66 and 73,138.20

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Solution

The fourth proportional to 130,489.11, 180,087.66 and 73,138.20 is: 100,937.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,489.11 : 180,087.66 = 73,138.20 : x
  2. Step 2: Convert to fraction form
    130,489.11/180,087.66 = 73,138.20/x
  3. Step 3: Cross multiply
    130,489.11x = 180,087.66 × 73,138.20
  4. Step 4: Simplify right side
    130,489.11x = 13,171,287,294.61
  5. Step 5: Solve for x
    x = 13,171,287,294.61/130,489.11
  6. Step 6: Final answer
    x = 100,937.83

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1.5x scale

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.