Home / 136,829.60-188,843.76-76,404.15

Finding the Fourth Proportional to 136,829.60, 188,843.76 and 76,404.15

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Solution

The fourth proportional to 136,829.60, 188,843.76 and 76,404.15 is: 105,448.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,829.60 : 188,843.76 = 76,404.15 : x
  2. Step 2: Convert to fraction form
    136,829.60/188,843.76 = 76,404.15/x
  3. Step 3: Cross multiply
    136,829.60x = 188,843.76 × 76,404.15
  4. Step 4: Simplify right side
    136,829.60x = 14,428,446,965.60
  5. Step 5: Solve for x
    x = 14,428,446,965.60/136,829.60
  6. Step 6: Final answer
    x = 105,448.29

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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.