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Finding the Fourth Proportional to 148,763.20, 205,224.40 and 88,299.40

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Solution

The fourth proportional to 148,763.20, 205,224.40 and 88,299.40 is: 121,812.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,763.20 : 205,224.40 = 88,299.40 : x
  2. Step 2: Convert to fraction form
    148,763.20/205,224.40 = 88,299.40/x
  3. Step 3: Cross multiply
    148,763.20x = 205,224.40 × 88,299.40
  4. Step 4: Simplify right side
    148,763.20x = 18,121,191,385.36
  5. Step 5: Solve for x
    x = 18,121,191,385.36/148,763.20
  6. Step 6: Final answer
    x = 121,812.33

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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.