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Finding the Fourth Proportional to 149,878.72, 224,831.04 and 61,138.36

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Solution

The fourth proportional to 149,878.72, 224,831.04 and 61,138.36 is: 91,712.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,878.72 : 224,831.04 = 61,138.36 : x
  2. Step 2: Convert to fraction form
    149,878.72/224,831.04 = 61,138.36/x
  3. Step 3: Cross multiply
    149,878.72x = 224,831.04 × 61,138.36
  4. Step 4: Simplify right side
    149,878.72x = 13,745,801,062.69
  5. Step 5: Solve for x
    x = 13,745,801,062.69/149,878.72
  6. Step 6: Final answer
    x = 91,712.83

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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.