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Finding the Fourth Proportional to 133,079.49, 183,646.85 and 72,651.87

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Solution

The fourth proportional to 133,079.49, 183,646.85 and 72,651.87 is: 100,258.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,079.49 : 183,646.85 = 72,651.87 : x
  2. Step 2: Convert to fraction form
    133,079.49/183,646.85 = 72,651.87/x
  3. Step 3: Cross multiply
    133,079.49x = 183,646.85 × 72,651.87
  4. Step 4: Simplify right side
    133,079.49x = 13,342,286,708.85
  5. Step 5: Solve for x
    x = 13,342,286,708.85/133,079.49
  6. Step 6: Final answer
    x = 100,258.02

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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.