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Finding the Fourth Proportional to 133,081.53, 183,655.29 and 72,654.72

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Solution

The fourth proportional to 133,081.53, 183,655.29 and 72,654.72 is: 100,265.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,081.53 : 183,655.29 = 72,654.72 : x
  2. Step 2: Convert to fraction form
    133,081.53/183,655.29 = 72,654.72/x
  3. Step 3: Cross multiply
    133,081.53x = 183,655.29 × 72,654.72
  4. Step 4: Simplify right side
    133,081.53x = 13,343,423,671.47
  5. Step 5: Solve for x
    x = 13,343,423,671.47/133,081.53
  6. Step 6: Final answer
    x = 100,265.03

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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.