Home / 120,817.18-166,700.85-73,069.54

Finding the Fourth Proportional to 120,817.18, 166,700.85 and 73,069.54

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Solution

The fourth proportional to 120,817.18, 166,700.85 and 73,069.54 is: 100,819.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,817.18 : 166,700.85 = 73,069.54 : x
  2. Step 2: Convert to fraction form
    120,817.18/166,700.85 = 73,069.54/x
  3. Step 3: Cross multiply
    120,817.18x = 166,700.85 × 73,069.54
  4. Step 4: Simplify right side
    120,817.18x = 12,180,754,427.11
  5. Step 5: Solve for x
    x = 12,180,754,427.11/120,817.18
  6. Step 6: Final answer
    x = 100,819.72

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.