Home / 136,340.55-188,101.26-78,948.54

Finding the Fourth Proportional to 136,340.55, 188,101.26 and 78,948.54

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Solution

The fourth proportional to 136,340.55, 188,101.26 and 78,948.54 is: 108,920.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,340.55 : 188,101.26 = 78,948.54 : x
  2. Step 2: Convert to fraction form
    136,340.55/188,101.26 = 78,948.54/x
  3. Step 3: Cross multiply
    136,340.55x = 188,101.26 × 78,948.54
  4. Step 4: Simplify right side
    136,340.55x = 14,850,319,849.16
  5. Step 5: Solve for x
    x = 14,850,319,849.16/136,340.55
  6. Step 6: Final answer
    x = 108,920.79

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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.