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Finding the Fourth Proportional to 125,222.80, 187,834.20 and 72,767.20

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Solution

The fourth proportional to 125,222.80, 187,834.20 and 72,767.20 is: 109,150.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,222.80 : 187,834.20 = 72,767.20 : x
  2. Step 2: Convert to fraction form
    125,222.80/187,834.20 = 72,767.20/x
  3. Step 3: Cross multiply
    125,222.80x = 187,834.20 × 72,767.20
  4. Step 4: Simplify right side
    125,222.80x = 13,668,168,798.24
  5. Step 5: Solve for x
    x = 13,668,168,798.24/125,222.80
  6. Step 6: Final answer
    x = 109,150.80

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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.