Home / 120,680.85-180,962.82-70,777.29

Finding the Fourth Proportional to 120,680.85, 180,962.82 and 70,777.29

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Solution

The fourth proportional to 120,680.85, 180,962.82 and 70,777.29 is: 106,131.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,680.85 : 180,962.82 = 70,777.29 : x
  2. Step 2: Convert to fraction form
    120,680.85/180,962.82 = 70,777.29/x
  3. Step 3: Cross multiply
    120,680.85x = 180,962.82 × 70,777.29
  4. Step 4: Simplify right side
    120,680.85x = 12,808,057,990.36
  5. Step 5: Solve for x
    x = 12,808,057,990.36/120,680.85
  6. Step 6: Final answer
    x = 106,131.65

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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.