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Finding the Fourth Proportional to 117,217.28, 175,719.68 and 42,319.68

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Solution

The fourth proportional to 117,217.28, 175,719.68 and 42,319.68 is: 63,441.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,217.28 : 175,719.68 = 42,319.68 : x
  2. Step 2: Convert to fraction form
    117,217.28/175,719.68 = 42,319.68/x
  3. Step 3: Cross multiply
    117,217.28x = 175,719.68 × 42,319.68
  4. Step 4: Simplify right side
    117,217.28x = 7,436,400,627.30
  5. Step 5: Solve for x
    x = 7,436,400,627.30/117,217.28
  6. Step 6: Final answer
    x = 63,441.16

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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.