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Finding the Fourth Proportional to 125,165.52, 172,636.92 and 91,184.40

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Solution

The fourth proportional to 125,165.52, 172,636.92 and 91,184.40 is: 125,767.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,165.52 : 172,636.92 = 91,184.40 : x
  2. Step 2: Convert to fraction form
    125,165.52/172,636.92 = 91,184.40/x
  3. Step 3: Cross multiply
    125,165.52x = 172,636.92 × 91,184.40
  4. Step 4: Simplify right side
    125,165.52x = 15,741,793,968.05
  5. Step 5: Solve for x
    x = 15,741,793,968.05/125,165.52
  6. Step 6: Final answer
    x = 125,767.82

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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.