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Finding the Fourth Proportional to 123,779.34, 170,819.01 and 67,194.36

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Solution

The fourth proportional to 123,779.34, 170,819.01 and 67,194.36 is: 92,730.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,779.34 : 170,819.01 = 67,194.36 : x
  2. Step 2: Convert to fraction form
    123,779.34/170,819.01 = 67,194.36/x
  3. Step 3: Cross multiply
    123,779.34x = 170,819.01 × 67,194.36
  4. Step 4: Simplify right side
    123,779.34x = 11,478,074,052.78
  5. Step 5: Solve for x
    x = 11,478,074,052.78/123,779.34
  6. Step 6: Final answer
    x = 92,730.13

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.