Home / 130,549.70-180,144.33-76,851.56

Finding the Fourth Proportional to 130,549.70, 180,144.33 and 76,851.56

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Solution

The fourth proportional to 130,549.70, 180,144.33 and 76,851.56 is: 106,046.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,549.70 : 180,144.33 = 76,851.56 : x
  2. Step 2: Convert to fraction form
    130,549.70/180,144.33 = 76,851.56/x
  3. Step 3: Cross multiply
    130,549.70x = 180,144.33 × 76,851.56
  4. Step 4: Simplify right side
    130,549.70x = 13,844,372,785.65
  5. Step 5: Solve for x
    x = 13,844,372,785.65/130,549.70
  6. Step 6: Final answer
    x = 106,046.76

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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.