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Finding the Fourth Proportional to 140,609.97, 210,915.77 and 57,503.97

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Solution

The fourth proportional to 140,609.97, 210,915.77 and 57,503.97 is: 86,256.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,609.97 : 210,915.77 = 57,503.97 : x
  2. Step 2: Convert to fraction form
    140,609.97/210,915.77 = 57,503.97/x
  3. Step 3: Cross multiply
    140,609.97x = 210,915.77 × 57,503.97
  4. Step 4: Simplify right side
    140,609.97x = 12,128,493,823.09
  5. Step 5: Solve for x
    x = 12,128,493,823.09/140,609.97
  6. Step 6: Final answer
    x = 86,256.29

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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.