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Finding the Fourth Proportional to 107,651.34, 161,480.10 and 28,765.68

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Solution

The fourth proportional to 107,651.34, 161,480.10 and 28,765.68 is: 43,149.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,651.34 : 161,480.10 = 28,765.68 : x
  2. Step 2: Convert to fraction form
    107,651.34/161,480.10 = 28,765.68/x
  3. Step 3: Cross multiply
    107,651.34x = 161,480.10 × 28,765.68
  4. Step 4: Simplify right side
    107,651.34x = 4,645,084,882.97
  5. Step 5: Solve for x
    x = 4,645,084,882.97/107,651.34
  6. Step 6: Final answer
    x = 43,149.35

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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.