Home / 103,609.38-155,432.86-42,819.75

Finding the Fourth Proportional to 103,609.38, 155,432.86 and 42,819.75

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Solution

The fourth proportional to 103,609.38, 155,432.86 and 42,819.75 is: 64,237.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,609.38 : 155,432.86 = 42,819.75 : x
  2. Step 2: Convert to fraction form
    103,609.38/155,432.86 = 42,819.75/x
  3. Step 3: Cross multiply
    103,609.38x = 155,432.86 × 42,819.75
  4. Step 4: Simplify right side
    103,609.38x = 6,655,595,662.78
  5. Step 5: Solve for x
    x = 6,655,595,662.78/103,609.38
  6. Step 6: Final answer
    x = 64,237.39

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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.