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Finding the Fourth Proportional to 125,289.76, 172,900.56 and 67,929.52

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Solution

The fourth proportional to 125,289.76, 172,900.56 and 67,929.52 is: 93,743.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,289.76 : 172,900.56 = 67,929.52 : x
  2. Step 2: Convert to fraction form
    125,289.76/172,900.56 = 67,929.52/x
  3. Step 3: Cross multiply
    125,289.76x = 172,900.56 × 67,929.52
  4. Step 4: Simplify right side
    125,289.76x = 11,745,052,048.53
  5. Step 5: Solve for x
    x = 11,745,052,048.53/125,289.76
  6. Step 6: Final answer
    x = 93,743.11

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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.