Home / 178,718.40-267,669.18-85,289.76

Finding the Fourth Proportional to 178,718.40, 267,669.18 and 85,289.76

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Solution

The fourth proportional to 178,718.40, 267,669.18 and 85,289.76 is: 127,739.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    178,718.40 : 267,669.18 = 85,289.76 : x
  2. Step 2: Convert to fraction form
    178,718.40/267,669.18 = 85,289.76/x
  3. Step 3: Cross multiply
    178,718.40x = 267,669.18 × 85,289.76
  4. Step 4: Simplify right side
    178,718.40x = 22,829,440,121.60
  5. Step 5: Solve for x
    x = 22,829,440,121.60/178,718.40
  6. Step 6: Final answer
    x = 127,739.73

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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.