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Finding the Fourth Proportional to 124,758, 172,165.84 and 71,043.03

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Solution

The fourth proportional to 124,758, 172,165.84 and 71,043.03 is: 98,039.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,758 : 172,165.84 = 71,043.03 : x
  2. Step 2: Convert to fraction form
    124,758/172,165.84 = 71,043.03/x
  3. Step 3: Cross multiply
    124,758x = 172,165.84 × 71,043.03
  4. Step 4: Simplify right side
    124,758x = 12,231,182,758.49
  5. Step 5: Solve for x
    x = 12,231,182,758.49/124,758
  6. Step 6: Final answer
    x = 98,039.27

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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.