Home / 155,775.64-215,042.09-91,235.91

Finding the Fourth Proportional to 155,775.64, 215,042.09 and 91,235.91

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Solution

The fourth proportional to 155,775.64, 215,042.09 and 91,235.91 is: 125,947.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,775.64 : 215,042.09 = 91,235.91 : x
  2. Step 2: Convert to fraction form
    155,775.64/215,042.09 = 91,235.91/x
  3. Step 3: Cross multiply
    155,775.64x = 215,042.09 × 91,235.91
  4. Step 4: Simplify right side
    155,775.64x = 19,619,560,120.87
  5. Step 5: Solve for x
    x = 19,619,560,120.87/155,775.64
  6. Step 6: Final answer
    x = 125,947.55

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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.