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Finding the Fourth Proportional to 140,558.40, 210,837.60 and 57,432.96

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Solution

The fourth proportional to 140,558.40, 210,837.60 and 57,432.96 is: 86,149.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,558.40 : 210,837.60 = 57,432.96 : x
  2. Step 2: Convert to fraction form
    140,558.40/210,837.60 = 57,432.96/x
  3. Step 3: Cross multiply
    140,558.40x = 210,837.60 × 57,432.96
  4. Step 4: Simplify right side
    140,558.40x = 12,109,027,447.30
  5. Step 5: Solve for x
    x = 12,109,027,447.30/140,558.40
  6. Step 6: Final answer
    x = 86,149.44

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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.