Home / 90,109.13-135,219.29-45,767.71

Finding the Fourth Proportional to 90,109.13, 135,219.29 and 45,767.71

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Solution

The fourth proportional to 90,109.13, 135,219.29 and 45,767.71 is: 68,679.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,109.13 : 135,219.29 = 45,767.71 : x
  2. Step 2: Convert to fraction form
    90,109.13/135,219.29 = 45,767.71/x
  3. Step 3: Cross multiply
    90,109.13x = 135,219.29 × 45,767.71
  4. Step 4: Simplify right side
    90,109.13x = 6,188,677,251.13
  5. Step 5: Solve for x
    x = 6,188,677,251.13/90,109.13
  6. Step 6: Final answer
    x = 68,679.80

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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.