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Finding the Fourth Proportional to 178,851.60, 267,970.20 and 85,155.60

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Solution

The fourth proportional to 178,851.60, 267,970.20 and 85,155.60 is: 127,587.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    178,851.60 : 267,970.20 = 85,155.60 : x
  2. Step 2: Convert to fraction form
    178,851.60/267,970.20 = 85,155.60/x
  3. Step 3: Cross multiply
    178,851.60x = 267,970.20 × 85,155.60
  4. Step 4: Simplify right side
    178,851.60x = 22,819,163,163.12
  5. Step 5: Solve for x
    x = 22,819,163,163.12/178,851.60
  6. Step 6: Final answer
    x = 127,587.13

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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.