Home / 155,948.22-215,208.28-87,964.98

Finding the Fourth Proportional to 155,948.22, 215,208.28 and 87,964.98

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Solution

The fourth proportional to 155,948.22, 215,208.28 and 87,964.98 is: 121,391.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,948.22 : 215,208.28 = 87,964.98 : x
  2. Step 2: Convert to fraction form
    155,948.22/215,208.28 = 87,964.98/x
  3. Step 3: Cross multiply
    155,948.22x = 215,208.28 × 87,964.98
  4. Step 4: Simplify right side
    155,948.22x = 18,930,792,046.03
  5. Step 5: Solve for x
    x = 18,930,792,046.03/155,948.22
  6. Step 6: Final answer
    x = 121,391.52

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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.