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Finding the Fourth Proportional to 120,167.20, 180,250.80 and 101,140.30

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Solution

The fourth proportional to 120,167.20, 180,250.80 and 101,140.30 is: 151,710.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,167.20 : 180,250.80 = 101,140.30 : x
  2. Step 2: Convert to fraction form
    120,167.20/180,250.80 = 101,140.30/x
  3. Step 3: Cross multiply
    120,167.20x = 180,250.80 × 101,140.30
  4. Step 4: Simplify right side
    120,167.20x = 18,230,619,987.24
  5. Step 5: Solve for x
    x = 18,230,619,987.24/120,167.20
  6. Step 6: Final answer
    x = 151,710.45

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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.