Home / 120,070.20-180,105.30-45,207.14

Finding the Fourth Proportional to 120,070.20, 180,105.30 and 45,207.14

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Solution

The fourth proportional to 120,070.20, 180,105.30 and 45,207.14 is: 67,810.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,070.20 : 180,105.30 = 45,207.14 : x
  2. Step 2: Convert to fraction form
    120,070.20/180,105.30 = 45,207.14/x
  3. Step 3: Cross multiply
    120,070.20x = 180,105.30 × 45,207.14
  4. Step 4: Simplify right side
    120,070.20x = 8,142,045,511.84
  5. Step 5: Solve for x
    x = 8,142,045,511.84/120,070.20
  6. Step 6: Final answer
    x = 67,810.71

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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.