Home / 155,947.82-215,203.14-87,963.80

Finding the Fourth Proportional to 155,947.82, 215,203.14 and 87,963.80

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Solution

The fourth proportional to 155,947.82, 215,203.14 and 87,963.80 is: 121,387.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,947.82 : 215,203.14 = 87,963.80 : x
  2. Step 2: Convert to fraction form
    155,947.82/215,203.14 = 87,963.80/x
  3. Step 3: Cross multiply
    155,947.82x = 215,203.14 × 87,963.80
  4. Step 4: Simplify right side
    155,947.82x = 18,930,084,890.32
  5. Step 5: Solve for x
    x = 18,930,084,890.32/155,947.82
  6. Step 6: Final answer
    x = 121,387.30

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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.