Home / 168,759.30-253,139.20-68,919.50

Finding the Fourth Proportional to 168,759.30, 253,139.20 and 68,919.50

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Solution

The fourth proportional to 168,759.30, 253,139.20 and 68,919.50 is: 103,379.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,759.30 : 253,139.20 = 68,919.50 : x
  2. Step 2: Convert to fraction form
    168,759.30/253,139.20 = 68,919.50/x
  3. Step 3: Cross multiply
    168,759.30x = 253,139.20 × 68,919.50
  4. Step 4: Simplify right side
    168,759.30x = 17,446,225,484.11
  5. Step 5: Solve for x
    x = 17,446,225,484.11/168,759.30
  6. Step 6: Final answer
    x = 103,379.34

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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.