Home / 133,115.64-183,707.04-72,691.92

Finding the Fourth Proportional to 133,115.64, 183,707.04 and 72,691.92

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Solution

The fourth proportional to 133,115.64, 183,707.04 and 72,691.92 is: 100,318.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,115.64 : 183,707.04 = 72,691.92 : x
  2. Step 2: Convert to fraction form
    133,115.64/183,707.04 = 72,691.92/x
  3. Step 3: Cross multiply
    133,115.64x = 183,707.04 × 72,691.92
  4. Step 4: Simplify right side
    133,115.64x = 13,354,017,455.12
  5. Step 5: Solve for x
    x = 13,354,017,455.12/133,115.64
  6. Step 6: Final answer
    x = 100,318.92

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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.