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Finding the Fourth Proportional to 142,874.01, 214,283.61 and 71,777.61

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Solution

The fourth proportional to 142,874.01, 214,283.61 and 71,777.61 is: 107,652.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,874.01 : 214,283.61 = 71,777.61 : x
  2. Step 2: Convert to fraction form
    142,874.01/214,283.61 = 71,777.61/x
  3. Step 3: Cross multiply
    142,874.01x = 214,283.61 × 71,777.61
  4. Step 4: Simplify right side
    142,874.01x = 15,380,765,387.97
  5. Step 5: Solve for x
    x = 15,380,765,387.97/142,874.01
  6. Step 6: Final answer
    x = 107,652.65

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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.