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Finding the Fourth Proportional to 178,509.75, 267,765.62 and 45,390.11

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Solution

The fourth proportional to 178,509.75, 267,765.62 and 45,390.11 is: 68,085.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    178,509.75 : 267,765.62 = 45,390.11 : x
  2. Step 2: Convert to fraction form
    178,509.75/267,765.62 = 45,390.11/x
  3. Step 3: Cross multiply
    178,509.75x = 267,765.62 × 45,390.11
  4. Step 4: Simplify right side
    178,509.75x = 12,153,909,380.24
  5. Step 5: Solve for x
    x = 12,153,909,380.24/178,509.75
  6. Step 6: Final answer
    x = 68,085.41

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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.