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Finding the Fourth Proportional to 125,325, 172,956.71 and 68,736.38

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Solution

The fourth proportional to 125,325, 172,956.71 and 68,736.38 is: 94,860.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,325 : 172,956.71 = 68,736.38 : x
  2. Step 2: Convert to fraction form
    125,325/172,956.71 = 68,736.38/x
  3. Step 3: Cross multiply
    125,325x = 172,956.71 × 68,736.38
  4. Step 4: Simplify right side
    125,325x = 11,888,417,449.17
  5. Step 5: Solve for x
    x = 11,888,417,449.17/125,325
  6. Step 6: Final answer
    x = 94,860.70

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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.