Home / 130,621.38-180,295.82-85,306.21

Finding the Fourth Proportional to 130,621.38, 180,295.82 and 85,306.21

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Solution

The fourth proportional to 130,621.38, 180,295.82 and 85,306.21 is: 117,747.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,621.38 : 180,295.82 = 85,306.21 : x
  2. Step 2: Convert to fraction form
    130,621.38/180,295.82 = 85,306.21/x
  3. Step 3: Cross multiply
    130,621.38x = 180,295.82 × 85,306.21
  4. Step 4: Simplify right side
    130,621.38x = 15,380,354,019.68
  5. Step 5: Solve for x
    x = 15,380,354,019.68/130,621.38
  6. Step 6: Final answer
    x = 117,747.60

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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.