Home / 109,397.12-150,989.67-69,090.71

Finding the Fourth Proportional to 109,397.12, 150,989.67 and 69,090.71

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Solution

The fourth proportional to 109,397.12, 150,989.67 and 69,090.71 is: 95,358.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,397.12 : 150,989.67 = 69,090.71 : x
  2. Step 2: Convert to fraction form
    109,397.12/150,989.67 = 69,090.71/x
  3. Step 3: Cross multiply
    109,397.12x = 150,989.67 × 69,090.71
  4. Step 4: Simplify right side
    109,397.12x = 10,431,982,748.02
  5. Step 5: Solve for x
    x = 10,431,982,748.02/109,397.12
  6. Step 6: Final answer
    x = 95,358.85

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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.