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Finding the Fourth Proportional to 140,885.60, 210,939.60 and 109,781.60

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Solution

The fourth proportional to 140,885.60, 210,939.60 and 109,781.60 is: 164,369.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,885.60 : 210,939.60 = 109,781.60 : x
  2. Step 2: Convert to fraction form
    140,885.60/210,939.60 = 109,781.60/x
  3. Step 3: Cross multiply
    140,885.60x = 210,939.60 × 109,781.60
  4. Step 4: Simplify right side
    140,885.60x = 23,157,286,791.36
  5. Step 5: Solve for x
    x = 23,157,286,791.36/140,885.60
  6. Step 6: Final answer
    x = 164,369.44

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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.