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Finding the Fourth Proportional to 125,337.36, 188,172.91 and 72,784.56

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Solution

The fourth proportional to 125,337.36, 188,172.91 and 72,784.56 is: 109,273.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,337.36 : 188,172.91 = 72,784.56 : x
  2. Step 2: Convert to fraction form
    125,337.36/188,172.91 = 72,784.56/x
  3. Step 3: Cross multiply
    125,337.36x = 188,172.91 × 72,784.56
  4. Step 4: Simplify right side
    125,337.36x = 13,696,082,458.27
  5. Step 5: Solve for x
    x = 13,696,082,458.27/125,337.36
  6. Step 6: Final answer
    x = 109,273.74

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.