Home / 90,734.92-135,490.85-74,127.76

Finding the Fourth Proportional to 90,734.92, 135,490.85 and 74,127.76

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Solution

The fourth proportional to 90,734.92, 135,490.85 and 74,127.76 is: 110,692.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,734.92 : 135,490.85 = 74,127.76 : x
  2. Step 2: Convert to fraction form
    90,734.92/135,490.85 = 74,127.76/x
  3. Step 3: Cross multiply
    90,734.92x = 135,490.85 × 74,127.76
  4. Step 4: Simplify right side
    90,734.92x = 10,043,633,211.00
  5. Step 5: Solve for x
    x = 10,043,633,211.00/90,734.92
  6. Step 6: Final answer
    x = 110,692.04

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.