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Finding the Fourth Proportional to 125,159.54, 187,737.59 and 30,390.45

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Solution

The fourth proportional to 125,159.54, 187,737.59 and 30,390.45 is: 45,585.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,159.54 : 187,737.59 = 30,390.45 : x
  2. Step 2: Convert to fraction form
    125,159.54/187,737.59 = 30,390.45/x
  3. Step 3: Cross multiply
    125,159.54x = 187,737.59 × 30,390.45
  4. Step 4: Simplify right side
    125,159.54x = 5,705,429,842.02
  5. Step 5: Solve for x
    x = 5,705,429,842.02/125,159.54
  6. Step 6: Final answer
    x = 45,585.26

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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.