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Finding the Fourth Proportional to 119,874.78, 179,831.70 and 45,000.81

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Solution

The fourth proportional to 119,874.78, 179,831.70 and 45,000.81 is: 67,508.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,874.78 : 179,831.70 = 45,000.81 : x
  2. Step 2: Convert to fraction form
    119,874.78/179,831.70 = 45,000.81/x
  3. Step 3: Cross multiply
    119,874.78x = 179,831.70 × 45,000.81
  4. Step 4: Simplify right side
    119,874.78x = 8,092,572,163.68
  5. Step 5: Solve for x
    x = 8,092,572,163.68/119,874.78
  6. Step 6: Final answer
    x = 67,508.55

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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.