Home / 136,821.20-204,886.20-89,819.60

Finding the Fourth Proportional to 136,821.20, 204,886.20 and 89,819.60

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Solution

The fourth proportional to 136,821.20, 204,886.20 and 89,819.60 is: 134,502.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,821.20 : 204,886.20 = 89,819.60 : x
  2. Step 2: Convert to fraction form
    136,821.20/204,886.20 = 89,819.60/x
  3. Step 3: Cross multiply
    136,821.20x = 204,886.20 × 89,819.60
  4. Step 4: Simplify right side
    136,821.20x = 18,402,796,529.52
  5. Step 5: Solve for x
    x = 18,402,796,529.52/136,821.20
  6. Step 6: Final answer
    x = 134,502.52

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.