Home / 87,159.80-130,724-23,118.40

Finding the Fourth Proportional to 87,159.80, 130,724 and 23,118.40

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Solution

The fourth proportional to 87,159.80, 130,724 and 23,118.40 is: 34,673.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,159.80 : 130,724 = 23,118.40 : x
  2. Step 2: Convert to fraction form
    87,159.80/130,724 = 23,118.40/x
  3. Step 3: Cross multiply
    87,159.80x = 130,724 × 23,118.40
  4. Step 4: Simplify right side
    87,159.80x = 3,022,129,721.60
  5. Step 5: Solve for x
    x = 3,022,129,721.60/87,159.80
  6. Step 6: Final answer
    x = 34,673.44

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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.