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Finding the Fourth Proportional to 135,312.20, 202,981.10 and 36,816.20

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Solution

The fourth proportional to 135,312.20, 202,981.10 and 36,816.20 is: 55,227.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,312.20 : 202,981.10 = 36,816.20 : x
  2. Step 2: Convert to fraction form
    135,312.20/202,981.10 = 36,816.20/x
  3. Step 3: Cross multiply
    135,312.20x = 202,981.10 × 36,816.20
  4. Step 4: Simplify right side
    135,312.20x = 7,472,992,773.82
  5. Step 5: Solve for x
    x = 7,472,992,773.82/135,312.20
  6. Step 6: Final answer
    x = 55,227.78

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1.5x scale

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.