Home / 120,439.06-180,660.10-57,265.12

Finding the Fourth Proportional to 120,439.06, 180,660.10 and 57,265.12

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Solution

The fourth proportional to 120,439.06, 180,660.10 and 57,265.12 is: 85,898.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,439.06 : 180,660.10 = 57,265.12 : x
  2. Step 2: Convert to fraction form
    120,439.06/180,660.10 = 57,265.12/x
  3. Step 3: Cross multiply
    120,439.06x = 180,660.10 × 57,265.12
  4. Step 4: Simplify right side
    120,439.06x = 10,345,522,305.71
  5. Step 5: Solve for x
    x = 10,345,522,305.71/120,439.06
  6. Step 6: Final answer
    x = 85,898.40

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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.