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Finding the Fourth Proportional to 120,182.40, 180,273.60 and 75,859.20

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Solution

The fourth proportional to 120,182.40, 180,273.60 and 75,859.20 is: 113,788.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,182.40 : 180,273.60 = 75,859.20 : x
  2. Step 2: Convert to fraction form
    120,182.40/180,273.60 = 75,859.20/x
  3. Step 3: Cross multiply
    120,182.40x = 180,273.60 × 75,859.20
  4. Step 4: Simplify right side
    120,182.40x = 13,675,411,077.12
  5. Step 5: Solve for x
    x = 13,675,411,077.12/120,182.40
  6. Step 6: Final answer
    x = 113,788.80

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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.