Home / 178,221.10-267,403.65-78,400.30

Finding the Fourth Proportional to 178,221.10, 267,403.65 and 78,400.30

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Solution

The fourth proportional to 178,221.10, 267,403.65 and 78,400.30 is: 117,632.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    178,221.10 : 267,403.65 = 78,400.30 : x
  2. Step 2: Convert to fraction form
    178,221.10/267,403.65 = 78,400.30/x
  3. Step 3: Cross multiply
    178,221.10x = 267,403.65 × 78,400.30
  4. Step 4: Simplify right side
    178,221.10x = 20,964,526,381.10
  5. Step 5: Solve for x
    x = 20,964,526,381.10/178,221.10
  6. Step 6: Final answer
    x = 117,632.12

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1.5x scale

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.