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Finding the Fourth Proportional to 78,167.62, 117,250.40 and 19,003.12

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Solution

The fourth proportional to 78,167.62, 117,250.40 and 19,003.12 is: 28,504.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,167.62 : 117,250.40 = 19,003.12 : x
  2. Step 2: Convert to fraction form
    78,167.62/117,250.40 = 19,003.12/x
  3. Step 3: Cross multiply
    78,167.62x = 117,250.40 × 19,003.12
  4. Step 4: Simplify right side
    78,167.62x = 2,228,123,421.25
  5. Step 5: Solve for x
    x = 2,228,123,421.25/78,167.62
  6. Step 6: Final answer
    x = 28,504.43

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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.