Home / 120,004.40-180,006.60-72,765.20

Finding the Fourth Proportional to 120,004.40, 180,006.60 and 72,765.20

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Solution

The fourth proportional to 120,004.40, 180,006.60 and 72,765.20 is: 109,147.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,004.40 : 180,006.60 = 72,765.20 : x
  2. Step 2: Convert to fraction form
    120,004.40/180,006.60 = 72,765.20/x
  3. Step 3: Cross multiply
    120,004.40x = 180,006.60 × 72,765.20
  4. Step 4: Simplify right side
    120,004.40x = 13,098,216,250.32
  5. Step 5: Solve for x
    x = 13,098,216,250.32/120,004.40
  6. Step 6: Final answer
    x = 109,147.80

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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.