Home / 200,023.60-275,902.50-128,290

Finding the Fourth Proportional to 200,023.60, 275,902.50 and 128,290

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Solution

The fourth proportional to 200,023.60, 275,902.50 and 128,290 is: 176,956.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    200,023.60 : 275,902.50 = 128,290 : x
  2. Step 2: Convert to fraction form
    200,023.60/275,902.50 = 128,290/x
  3. Step 3: Cross multiply
    200,023.60x = 275,902.50 × 128,290
  4. Step 4: Simplify right side
    200,023.60x = 35,395,531,725
  5. Step 5: Solve for x
    x = 35,395,531,725/200,023.60
  6. Step 6: Final answer
    x = 176,956.78

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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.