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Finding the Fourth Proportional to 134,781.30, 202,390.65 and 75,732.30

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Solution

The fourth proportional to 134,781.30, 202,390.65 and 75,732.30 is: 113,721.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,781.30 : 202,390.65 = 75,732.30 : x
  2. Step 2: Convert to fraction form
    134,781.30/202,390.65 = 75,732.30/x
  3. Step 3: Cross multiply
    134,781.30x = 202,390.65 × 75,732.30
  4. Step 4: Simplify right side
    134,781.30x = 15,327,509,423.00
  5. Step 5: Solve for x
    x = 15,327,509,423.00/134,781.30
  6. Step 6: Final answer
    x = 113,721.34

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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.