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Finding the Fourth Proportional to 124,105.68, 171,264.08 and 75,696.40

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Solution

The fourth proportional to 124,105.68, 171,264.08 and 75,696.40 is: 104,459.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,105.68 : 171,264.08 = 75,696.40 : x
  2. Step 2: Convert to fraction form
    124,105.68/171,264.08 = 75,696.40/x
  3. Step 3: Cross multiply
    124,105.68x = 171,264.08 × 75,696.40
  4. Step 4: Simplify right side
    124,105.68x = 12,964,074,305.31
  5. Step 5: Solve for x
    x = 12,964,074,305.31/124,105.68
  6. Step 6: Final answer
    x = 104,459.96

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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.