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Finding the Fourth Proportional to 138,961, 191,924.58 and 94,171.24

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Solution

The fourth proportional to 138,961, 191,924.58 and 94,171.24 is: 130,063.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,961 : 191,924.58 = 94,171.24 : x
  2. Step 2: Convert to fraction form
    138,961/191,924.58 = 94,171.24/x
  3. Step 3: Cross multiply
    138,961x = 191,924.58 × 94,171.24
  4. Step 4: Simplify right side
    138,961x = 18,073,775,685.08
  5. Step 5: Solve for x
    x = 18,073,775,685.08/138,961
  6. Step 6: Final answer
    x = 130,063.66

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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.