Home / 99,921.60-149,882.40-84,369.60

Finding the Fourth Proportional to 99,921.60, 149,882.40 and 84,369.60

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Solution

The fourth proportional to 99,921.60, 149,882.40 and 84,369.60 is: 126,554.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,921.60 : 149,882.40 = 84,369.60 : x
  2. Step 2: Convert to fraction form
    99,921.60/149,882.40 = 84,369.60/x
  3. Step 3: Cross multiply
    99,921.60x = 149,882.40 × 84,369.60
  4. Step 4: Simplify right side
    99,921.60x = 12,645,518,135.04
  5. Step 5: Solve for x
    x = 12,645,518,135.04/99,921.60
  6. Step 6: Final answer
    x = 126,554.40

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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.