Home / 109,510.20-164,438.10-80,134.20

Finding the Fourth Proportional to 109,510.20, 164,438.10 and 80,134.20

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Solution

The fourth proportional to 109,510.20, 164,438.10 and 80,134.20 is: 120,327.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,510.20 : 164,438.10 = 80,134.20 : x
  2. Step 2: Convert to fraction form
    109,510.20/164,438.10 = 80,134.20/x
  3. Step 3: Cross multiply
    109,510.20x = 164,438.10 × 80,134.20
  4. Step 4: Simplify right side
    109,510.20x = 13,177,115,593.02
  5. Step 5: Solve for x
    x = 13,177,115,593.02/109,510.20
  6. Step 6: Final answer
    x = 120,327.75

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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.