Home / 121,644.43-167,948.30-108,875.50

Finding the Fourth Proportional to 121,644.43, 167,948.30 and 108,875.50

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Solution

The fourth proportional to 121,644.43, 167,948.30 and 108,875.50 is: 150,318.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,644.43 : 167,948.30 = 108,875.50 : x
  2. Step 2: Convert to fraction form
    121,644.43/167,948.30 = 108,875.50/x
  3. Step 3: Cross multiply
    121,644.43x = 167,948.30 × 108,875.50
  4. Step 4: Simplify right side
    121,644.43x = 18,285,455,136.65
  5. Step 5: Solve for x
    x = 18,285,455,136.65/121,644.43
  6. Step 6: Final answer
    x = 150,318.89

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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.