Home / 131,173.20-180,923.13-85,778.37

Finding the Fourth Proportional to 131,173.20, 180,923.13 and 85,778.37

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Solution

The fourth proportional to 131,173.20, 180,923.13 and 85,778.37 is: 118,311.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,173.20 : 180,923.13 = 85,778.37 : x
  2. Step 2: Convert to fraction form
    131,173.20/180,923.13 = 85,778.37/x
  3. Step 3: Cross multiply
    131,173.20x = 180,923.13 × 85,778.37
  4. Step 4: Simplify right side
    131,173.20x = 15,519,291,186.70
  5. Step 5: Solve for x
    x = 15,519,291,186.70/131,173.20
  6. Step 6: Final answer
    x = 118,311.45

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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.