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Finding the Fourth Proportional to 148,398.75, 204,803.24 and 81,343.71

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Solution

The fourth proportional to 148,398.75, 204,803.24 and 81,343.71 is: 112,261.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,398.75 : 204,803.24 = 81,343.71 : x
  2. Step 2: Convert to fraction form
    148,398.75/204,803.24 = 81,343.71/x
  3. Step 3: Cross multiply
    148,398.75x = 204,803.24 × 81,343.71
  4. Step 4: Simplify right side
    148,398.75x = 16,659,454,954.90
  5. Step 5: Solve for x
    x = 16,659,454,954.90/148,398.75
  6. Step 6: Final answer
    x = 112,261.42

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1.5x scale

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.