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Finding the Fourth Proportional to 144,152.76, 198,930.74 and 80,490.52

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Solution

The fourth proportional to 144,152.76, 198,930.74 and 80,490.52 is: 111,076.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,152.76 : 198,930.74 = 80,490.52 : x
  2. Step 2: Convert to fraction form
    144,152.76/198,930.74 = 80,490.52/x
  3. Step 3: Cross multiply
    144,152.76x = 198,930.74 × 80,490.52
  4. Step 4: Simplify right side
    144,152.76x = 16,012,038,706.58
  5. Step 5: Solve for x
    x = 16,012,038,706.58/144,152.76
  6. Step 6: Final answer
    x = 111,076.88

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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.