Home / 107,952.20-161,928.30-85,401.80

Finding the Fourth Proportional to 107,952.20, 161,928.30 and 85,401.80

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Solution

The fourth proportional to 107,952.20, 161,928.30 and 85,401.80 is: 128,102.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,952.20 : 161,928.30 = 85,401.80 : x
  2. Step 2: Convert to fraction form
    107,952.20/161,928.30 = 85,401.80/x
  3. Step 3: Cross multiply
    107,952.20x = 161,928.30 × 85,401.80
  4. Step 4: Simplify right side
    107,952.20x = 13,828,968,290.94
  5. Step 5: Solve for x
    x = 13,828,968,290.94/107,952.20
  6. Step 6: Final answer
    x = 128,102.70

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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.