Home / 87,135.42-130,112.91-69,164.46

Finding the Fourth Proportional to 87,135.42, 130,112.91 and 69,164.46

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Solution

The fourth proportional to 87,135.42, 130,112.91 and 69,164.46 is: 103,278.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,135.42 : 130,112.91 = 69,164.46 : x
  2. Step 2: Convert to fraction form
    87,135.42/130,112.91 = 69,164.46/x
  3. Step 3: Cross multiply
    87,135.42x = 130,112.91 × 69,164.46
  4. Step 4: Simplify right side
    87,135.42x = 8,999,189,159.18
  5. Step 5: Solve for x
    x = 8,999,189,159.18/87,135.42
  6. Step 6: Final answer
    x = 103,278.20

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.