Home / 112,367.74-155,129.70-76,610.29

Finding the Fourth Proportional to 112,367.74, 155,129.70 and 76,610.29

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Solution

The fourth proportional to 112,367.74, 155,129.70 and 76,610.29 is: 105,764.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,367.74 : 155,129.70 = 76,610.29 : x
  2. Step 2: Convert to fraction form
    112,367.74/155,129.70 = 76,610.29/x
  3. Step 3: Cross multiply
    112,367.74x = 155,129.70 × 76,610.29
  4. Step 4: Simplify right side
    112,367.74x = 11,884,531,304.61
  5. Step 5: Solve for x
    x = 11,884,531,304.61/112,367.74
  6. Step 6: Final answer
    x = 105,764.62

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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.