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Finding the Fourth Proportional to 125,177.52, 172,751.90 and 71,479.80

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Solution

The fourth proportional to 125,177.52, 172,751.90 and 71,479.80 is: 98,646.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,177.52 : 172,751.90 = 71,479.80 : x
  2. Step 2: Convert to fraction form
    125,177.52/172,751.90 = 71,479.80/x
  3. Step 3: Cross multiply
    125,177.52x = 172,751.90 × 71,479.80
  4. Step 4: Simplify right side
    125,177.52x = 12,348,271,261.62
  5. Step 5: Solve for x
    x = 12,348,271,261.62/125,177.52
  6. Step 6: Final answer
    x = 98,646.08

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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.