Home / 136,780.54-188,788.62-80,210.14

Finding the Fourth Proportional to 136,780.54, 188,788.62 and 80,210.14

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Solution

The fourth proportional to 136,780.54, 188,788.62 and 80,210.14 is: 110,708.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,780.54 : 188,788.62 = 80,210.14 : x
  2. Step 2: Convert to fraction form
    136,780.54/188,788.62 = 80,210.14/x
  3. Step 3: Cross multiply
    136,780.54x = 188,788.62 × 80,210.14
  4. Step 4: Simplify right side
    136,780.54x = 15,142,761,640.61
  5. Step 5: Solve for x
    x = 15,142,761,640.61/136,780.54
  6. Step 6: Final answer
    x = 110,708.45

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1.5x scale

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.