Home / 136,839.60-188,838.72-80,251.20

Finding the Fourth Proportional to 136,839.60, 188,838.72 and 80,251.20

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Solution

The fourth proportional to 136,839.60, 188,838.72 and 80,251.20 is: 110,746.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,839.60 : 188,838.72 = 80,251.20 : x
  2. Step 2: Convert to fraction form
    136,839.60/188,838.72 = 80,251.20/x
  3. Step 3: Cross multiply
    136,839.60x = 188,838.72 × 80,251.20
  4. Step 4: Simplify right side
    136,839.60x = 15,154,533,886.46
  5. Step 5: Solve for x
    x = 15,154,533,886.46/136,839.60
  6. Step 6: Final answer
    x = 110,746.70

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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.