Home / 106,721.71-160,076.77-54,129.82

Finding the Fourth Proportional to 106,721.71, 160,076.77 and 54,129.82

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Solution

The fourth proportional to 106,721.71, 160,076.77 and 54,129.82 is: 81,191.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    106,721.71 : 160,076.77 = 54,129.82 : x
  2. Step 2: Convert to fraction form
    106,721.71/160,076.77 = 54,129.82/x
  3. Step 3: Cross multiply
    106,721.71x = 160,076.77 × 54,129.82
  4. Step 4: Simplify right side
    106,721.71x = 8,664,926,746.28
  5. Step 5: Solve for x
    x = 8,664,926,746.28/106,721.71
  6. Step 6: Final answer
    x = 81,191.79

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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.