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Finding the Fourth Proportional to 125,132.44, 172,681.05 and 71,448.88

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Solution

The fourth proportional to 125,132.44, 172,681.05 and 71,448.88 is: 98,598.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,132.44 : 172,681.05 = 71,448.88 : x
  2. Step 2: Convert to fraction form
    125,132.44/172,681.05 = 71,448.88/x
  3. Step 3: Cross multiply
    125,132.44x = 172,681.05 × 71,448.88
  4. Step 4: Simplify right side
    125,132.44x = 12,337,867,619.72
  5. Step 5: Solve for x
    x = 12,337,867,619.72/125,132.44
  6. Step 6: Final answer
    x = 98,598.47

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1.5x scale

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.