Home / 120,103.92-180,165.23-70,189.20

Finding the Fourth Proportional to 120,103.92, 180,165.23 and 70,189.20

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Solution

The fourth proportional to 120,103.92, 180,165.23 and 70,189.20 is: 105,289.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,103.92 : 180,165.23 = 70,189.20 : x
  2. Step 2: Convert to fraction form
    120,103.92/180,165.23 = 70,189.20/x
  3. Step 3: Cross multiply
    120,103.92x = 180,165.23 × 70,189.20
  4. Step 4: Simplify right side
    120,103.92x = 12,645,653,361.52
  5. Step 5: Solve for x
    x = 12,645,653,361.52/120,103.92
  6. Step 6: Final answer
    x = 105,289.26

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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.