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Finding the Fourth Proportional to 125,233.68, 172,820.52 and 67,871.64

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Solution

The fourth proportional to 125,233.68, 172,820.52 and 67,871.64 is: 93,661.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,233.68 : 172,820.52 = 67,871.64 : x
  2. Step 2: Convert to fraction form
    125,233.68/172,820.52 = 67,871.64/x
  3. Step 3: Cross multiply
    125,233.68x = 172,820.52 × 67,871.64
  4. Step 4: Simplify right side
    125,233.68x = 11,729,612,118.05
  5. Step 5: Solve for x
    x = 11,729,612,118.05/125,233.68
  6. Step 6: Final answer
    x = 93,661.80

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.