Home / 87,287.57-130,749.70-84,276.34

Finding the Fourth Proportional to 87,287.57, 130,749.70 and 84,276.34

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Solution

The fourth proportional to 87,287.57, 130,749.70 and 84,276.34 is: 126,239.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,287.57 : 130,749.70 = 84,276.34 : x
  2. Step 2: Convert to fraction form
    87,287.57/130,749.70 = 84,276.34/x
  3. Step 3: Cross multiply
    87,287.57x = 130,749.70 × 84,276.34
  4. Step 4: Simplify right side
    87,287.57x = 11,019,106,528.02
  5. Step 5: Solve for x
    x = 11,019,106,528.02/87,287.57
  6. Step 6: Final answer
    x = 126,239.13

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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.