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Finding the Fourth Proportional to 125,632.80, 188,449.20 and 51,760.80

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Solution

The fourth proportional to 125,632.80, 188,449.20 and 51,760.80 is: 77,641.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,632.80 : 188,449.20 = 51,760.80 : x
  2. Step 2: Convert to fraction form
    125,632.80/188,449.20 = 51,760.80/x
  3. Step 3: Cross multiply
    125,632.80x = 188,449.20 × 51,760.80
  4. Step 4: Simplify right side
    125,632.80x = 9,754,281,351.36
  5. Step 5: Solve for x
    x = 9,754,281,351.36/125,632.80
  6. Step 6: Final answer
    x = 77,641.20

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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.