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Finding the Fourth Proportional to 125,089.47, 187,632.55 and 30,320.47

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Solution

The fourth proportional to 125,089.47, 187,632.55 and 30,320.47 is: 45,480.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,089.47 : 187,632.55 = 30,320.47 : x
  2. Step 2: Convert to fraction form
    125,089.47/187,632.55 = 30,320.47/x
  3. Step 3: Cross multiply
    125,089.47x = 187,632.55 × 30,320.47
  4. Step 4: Simplify right side
    125,089.47x = 5,689,107,375.74
  5. Step 5: Solve for x
    x = 5,689,107,375.74/125,089.47
  6. Step 6: Final answer
    x = 45,480.31

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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.