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Finding the Fourth Proportional to 124,960.80, 187,484.40 and 120,640.80

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Solution

The fourth proportional to 124,960.80, 187,484.40 and 120,640.80 is: 181,002.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,960.80 : 187,484.40 = 120,640.80 : x
  2. Step 2: Convert to fraction form
    124,960.80/187,484.40 = 120,640.80/x
  3. Step 3: Cross multiply
    124,960.80x = 187,484.40 × 120,640.80
  4. Step 4: Simplify right side
    124,960.80x = 22,618,268,003.52
  5. Step 5: Solve for x
    x = 22,618,268,003.52/124,960.80
  6. Step 6: Final answer
    x = 181,002.91

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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.