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Finding the Fourth Proportional to 128,202.68, 192,304.15 and 33,432.79

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Solution

The fourth proportional to 128,202.68, 192,304.15 and 33,432.79 is: 50,149.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,202.68 : 192,304.15 = 33,432.79 : x
  2. Step 2: Convert to fraction form
    128,202.68/192,304.15 = 33,432.79/x
  3. Step 3: Cross multiply
    128,202.68x = 192,304.15 × 33,432.79
  4. Step 4: Simplify right side
    128,202.68x = 6,429,264,263.08
  5. Step 5: Solve for x
    x = 6,429,264,263.08/128,202.68
  6. Step 6: Final answer
    x = 50,149.22

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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.