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Finding the Fourth Proportional to 79,165.39, 118,748.90 and 20,001.15

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Solution

The fourth proportional to 79,165.39, 118,748.90 and 20,001.15 is: 30,001.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,165.39 : 118,748.90 = 20,001.15 : x
  2. Step 2: Convert to fraction form
    79,165.39/118,748.90 = 20,001.15/x
  3. Step 3: Cross multiply
    79,165.39x = 118,748.90 × 20,001.15
  4. Step 4: Simplify right side
    79,165.39x = 2,375,114,561.24
  5. Step 5: Solve for x
    x = 2,375,114,561.24/79,165.39
  6. Step 6: Final answer
    x = 30,001.93

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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.