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Finding the Fourth Proportional to 168,397, 252,703.05 and 79,655.74

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Solution

The fourth proportional to 168,397, 252,703.05 and 79,655.74 is: 119,534.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,397 : 252,703.05 = 79,655.74 : x
  2. Step 2: Convert to fraction form
    168,397/252,703.05 = 79,655.74/x
  3. Step 3: Cross multiply
    168,397x = 252,703.05 × 79,655.74
  4. Step 4: Simplify right side
    168,397x = 20,129,248,448.01
  5. Step 5: Solve for x
    x = 20,129,248,448.01/168,397
  6. Step 6: Final answer
    x = 119,534.48

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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.