Home / 125,819.10-188,400.60-81,204.30

Finding the Fourth Proportional to 125,819.10, 188,400.60 and 81,204.30

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Solution

The fourth proportional to 125,819.10, 188,400.60 and 81,204.30 is: 121,594.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,819.10 : 188,400.60 = 81,204.30 : x
  2. Step 2: Convert to fraction form
    125,819.10/188,400.60 = 81,204.30/x
  3. Step 3: Cross multiply
    125,819.10x = 188,400.60 × 81,204.30
  4. Step 4: Simplify right side
    125,819.10x = 15,298,938,842.58
  5. Step 5: Solve for x
    x = 15,298,938,842.58/125,819.10
  6. Step 6: Final answer
    x = 121,594.72

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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.