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Finding the Fourth Proportional to 119,031.20, 178,201.20 and 115,575.20

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Solution

The fourth proportional to 119,031.20, 178,201.20 and 115,575.20 is: 173,027.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,031.20 : 178,201.20 = 115,575.20 : x
  2. Step 2: Convert to fraction form
    119,031.20/178,201.20 = 115,575.20/x
  3. Step 3: Cross multiply
    119,031.20x = 178,201.20 × 115,575.20
  4. Step 4: Simplify right side
    119,031.20x = 20,595,639,330.24
  5. Step 5: Solve for x
    x = 20,595,639,330.24/119,031.20
  6. Step 6: Final answer
    x = 173,027.23

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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.