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Finding the Fourth Proportional to 140,421.60, 210,826.80 and 110,872.80

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Solution

The fourth proportional to 140,421.60, 210,826.80 and 110,872.80 is: 166,462.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,421.60 : 210,826.80 = 110,872.80 : x
  2. Step 2: Convert to fraction form
    140,421.60/210,826.80 = 110,872.80/x
  3. Step 3: Cross multiply
    140,421.60x = 210,826.80 × 110,872.80
  4. Step 4: Simplify right side
    140,421.60x = 23,374,957,631.04
  5. Step 5: Solve for x
    x = 23,374,957,631.04/140,421.60
  6. Step 6: Final answer
    x = 166,462.69

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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.