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Finding the Fourth Proportional to 106,711.20, 160,066.80 and 99,799.20

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Solution

The fourth proportional to 106,711.20, 160,066.80 and 99,799.20 is: 149,698.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    106,711.20 : 160,066.80 = 99,799.20 : x
  2. Step 2: Convert to fraction form
    106,711.20/160,066.80 = 99,799.20/x
  3. Step 3: Cross multiply
    106,711.20x = 160,066.80 × 99,799.20
  4. Step 4: Simplify right side
    106,711.20x = 15,974,538,586.56
  5. Step 5: Solve for x
    x = 15,974,538,586.56/106,711.20
  6. Step 6: Final answer
    x = 149,698.80

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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.