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Finding the Fourth Proportional to 140,862.60, 210,905.10 and 109,758.60

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Solution

The fourth proportional to 140,862.60, 210,905.10 and 109,758.60 is: 164,334.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,862.60 : 210,905.10 = 109,758.60 : x
  2. Step 2: Convert to fraction form
    140,862.60/210,905.10 = 109,758.60/x
  3. Step 3: Cross multiply
    140,862.60x = 210,905.10 × 109,758.60
  4. Step 4: Simplify right side
    140,862.60x = 23,148,648,508.86
  5. Step 5: Solve for x
    x = 23,148,648,508.86/140,862.60
  6. Step 6: Final answer
    x = 164,334.95

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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.