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Finding the Fourth Proportional to 178,874.62, 246,862.13 and 121,640.91

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Solution

The fourth proportional to 178,874.62, 246,862.13 and 121,640.91 is: 167,874.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    178,874.62 : 246,862.13 = 121,640.91 : x
  2. Step 2: Convert to fraction form
    178,874.62/246,862.13 = 121,640.91/x
  3. Step 3: Cross multiply
    178,874.62x = 246,862.13 × 121,640.91
  4. Step 4: Simplify right side
    178,874.62x = 30,028,532,603.80
  5. Step 5: Solve for x
    x = 30,028,532,603.80/178,874.62
  6. Step 6: Final answer
    x = 167,874.76

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.