Home / 120,548.20-180,622.86-85,425.16

Finding the Fourth Proportional to 120,548.20, 180,622.86 and 85,425.16

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Solution

The fourth proportional to 120,548.20, 180,622.86 and 85,425.16 is: 127,996.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,548.20 : 180,622.86 = 85,425.16 : x
  2. Step 2: Convert to fraction form
    120,548.20/180,622.86 = 85,425.16/x
  3. Step 3: Cross multiply
    120,548.20x = 180,622.86 × 85,425.16
  4. Step 4: Simplify right side
    120,548.20x = 15,429,736,715.16
  5. Step 5: Solve for x
    x = 15,429,736,715.16/120,548.20
  6. Step 6: Final answer
    x = 127,996.41

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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.