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Finding the Fourth Proportional to 108,785.82, 150,125.70 and 65,767.68

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Solution

The fourth proportional to 108,785.82, 150,125.70 and 65,767.68 is: 90,760.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,785.82 : 150,125.70 = 65,767.68 : x
  2. Step 2: Convert to fraction form
    108,785.82/150,125.70 = 65,767.68/x
  3. Step 3: Cross multiply
    108,785.82x = 150,125.70 × 65,767.68
  4. Step 4: Simplify right side
    108,785.82x = 9,873,418,997.38
  5. Step 5: Solve for x
    x = 9,873,418,997.38/108,785.82
  6. Step 6: Final answer
    x = 90,760.17

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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.