Home / 155,963.60-215,219.76-88,891.28

Finding the Fourth Proportional to 155,963.60, 215,219.76 and 88,891.28

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Solution

The fourth proportional to 155,963.60, 215,219.76 and 88,891.28 is: 122,664.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,963.60 : 215,219.76 = 88,891.28 : x
  2. Step 2: Convert to fraction form
    155,963.60/215,219.76 = 88,891.28/x
  3. Step 3: Cross multiply
    155,963.60x = 215,219.76 × 88,891.28
  4. Step 4: Simplify right side
    155,963.60x = 19,131,159,947.69
  5. Step 5: Solve for x
    x = 19,131,159,947.69/155,963.60
  6. Step 6: Final answer
    x = 122,664.26

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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.