Home / 120,607.38-180,615.83-84,981.15

Finding the Fourth Proportional to 120,607.38, 180,615.83 and 84,981.15

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Solution

The fourth proportional to 120,607.38, 180,615.83 and 84,981.15 is: 127,263.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,607.38 : 180,615.83 = 84,981.15 : x
  2. Step 2: Convert to fraction form
    120,607.38/180,615.83 = 84,981.15/x
  3. Step 3: Cross multiply
    120,607.38x = 180,615.83 × 84,981.15
  4. Step 4: Simplify right side
    120,607.38x = 15,348,940,516.70
  5. Step 5: Solve for x
    x = 15,348,940,516.70/120,607.38
  6. Step 6: Final answer
    x = 127,263.69

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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.