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Finding the Fourth Proportional to 124,143.97, 171,295.80 and 75,734.72

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Solution

The fourth proportional to 124,143.97, 171,295.80 and 75,734.72 is: 104,499.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,143.97 : 171,295.80 = 75,734.72 : x
  2. Step 2: Convert to fraction form
    124,143.97/171,295.80 = 75,734.72/x
  3. Step 3: Cross multiply
    124,143.97x = 171,295.80 × 75,734.72
  4. Step 4: Simplify right side
    124,143.97x = 12,973,039,915.59
  5. Step 5: Solve for x
    x = 12,973,039,915.59/124,143.97
  6. Step 6: Final answer
    x = 104,499.96

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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.