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Finding the Fourth Proportional to 148,978.70, 223,468.05 and 89,929.70

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Solution

The fourth proportional to 148,978.70, 223,468.05 and 89,929.70 is: 134,894.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,978.70 : 223,468.05 = 89,929.70 : x
  2. Step 2: Convert to fraction form
    148,978.70/223,468.05 = 89,929.70/x
  3. Step 3: Cross multiply
    148,978.70x = 223,468.05 × 89,929.70
  4. Step 4: Simplify right side
    148,978.70x = 20,096,414,696.09
  5. Step 5: Solve for x
    x = 20,096,414,696.09/148,978.70
  6. Step 6: Final answer
    x = 134,894.55

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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.