Home / 136,826.76-188,819.16-76,398.45

Finding the Fourth Proportional to 136,826.76, 188,819.16 and 76,398.45

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Solution

The fourth proportional to 136,826.76, 188,819.16 and 76,398.45 is: 105,428.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,826.76 : 188,819.16 = 76,398.45 : x
  2. Step 2: Convert to fraction form
    136,826.76/188,819.16 = 76,398.45/x
  3. Step 3: Cross multiply
    136,826.76x = 188,819.16 × 76,398.45
  4. Step 4: Simplify right side
    136,826.76x = 14,425,491,154.30
  5. Step 5: Solve for x
    x = 14,425,491,154.30/136,826.76
  6. Step 6: Final answer
    x = 105,428.87

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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.