Home / 113,143.80-169,569.90-68,723.40

Finding the Fourth Proportional to 113,143.80, 169,569.90 and 68,723.40

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Solution

The fourth proportional to 113,143.80, 169,569.90 and 68,723.40 is: 102,996.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,143.80 : 169,569.90 = 68,723.40 : x
  2. Step 2: Convert to fraction form
    113,143.80/169,569.90 = 68,723.40/x
  3. Step 3: Cross multiply
    113,143.80x = 169,569.90 × 68,723.40
  4. Step 4: Simplify right side
    113,143.80x = 11,653,420,065.66
  5. Step 5: Solve for x
    x = 11,653,420,065.66/113,143.80
  6. Step 6: Final answer
    x = 102,996.54

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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.