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Finding the Fourth Proportional to 143,319.30, 214,978.95 and 125,823.30

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Solution

The fourth proportional to 143,319.30, 214,978.95 and 125,823.30 is: 188,734.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,319.30 : 214,978.95 = 125,823.30 : x
  2. Step 2: Convert to fraction form
    143,319.30/214,978.95 = 125,823.30/x
  3. Step 3: Cross multiply
    143,319.30x = 214,978.95 × 125,823.30
  4. Step 4: Simplify right side
    143,319.30x = 27,049,360,919.54
  5. Step 5: Solve for x
    x = 27,049,360,919.54/143,319.30
  6. Step 6: Final answer
    x = 188,734.95

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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.