Home / 87,290.56-130,754.20-84,279.34

Finding the Fourth Proportional to 87,290.56, 130,754.20 and 84,279.34

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Solution

The fourth proportional to 87,290.56, 130,754.20 and 84,279.34 is: 126,243.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,290.56 : 130,754.20 = 84,279.34 : x
  2. Step 2: Convert to fraction form
    87,290.56/130,754.20 = 84,279.34/x
  3. Step 3: Cross multiply
    87,290.56x = 130,754.20 × 84,279.34
  4. Step 4: Simplify right side
    87,290.56x = 11,019,877,678.23
  5. Step 5: Solve for x
    x = 11,019,877,678.23/87,290.56
  6. Step 6: Final answer
    x = 126,243.64

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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.