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Finding the Fourth Proportional to 124,129.76, 171,311.67 and 73,158.90

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Solution

The fourth proportional to 124,129.76, 171,311.67 and 73,158.90 is: 100,966.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,129.76 : 171,311.67 = 73,158.90 : x
  2. Step 2: Convert to fraction form
    124,129.76/171,311.67 = 73,158.90/x
  3. Step 3: Cross multiply
    124,129.76x = 171,311.67 × 73,158.90
  4. Step 4: Simplify right side
    124,129.76x = 12,532,973,334.36
  5. Step 5: Solve for x
    x = 12,532,973,334.36/124,129.76
  6. Step 6: Final answer
    x = 100,966.71

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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.