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Finding the Fourth Proportional to 148,113.52, 204,401.80 and 81,045.52

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Solution

The fourth proportional to 148,113.52, 204,401.80 and 81,045.52 is: 111,845.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,113.52 : 204,401.80 = 81,045.52 : x
  2. Step 2: Convert to fraction form
    148,113.52/204,401.80 = 81,045.52/x
  3. Step 3: Cross multiply
    148,113.52x = 204,401.80 × 81,045.52
  4. Step 4: Simplify right side
    148,113.52x = 16,565,850,169.94
  5. Step 5: Solve for x
    x = 16,565,850,169.94/148,113.52
  6. Step 6: Final answer
    x = 111,845.63

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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.