Home / 121,924.50-182,720.70-68,641.89

Finding the Fourth Proportional to 121,924.50, 182,720.70 and 68,641.89

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Solution

The fourth proportional to 121,924.50, 182,720.70 and 68,641.89 is: 102,869.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,924.50 : 182,720.70 = 68,641.89 : x
  2. Step 2: Convert to fraction form
    121,924.50/182,720.70 = 68,641.89/x
  3. Step 3: Cross multiply
    121,924.50x = 182,720.70 × 68,641.89
  4. Step 4: Simplify right side
    121,924.50x = 12,542,294,190.12
  5. Step 5: Solve for x
    x = 12,542,294,190.12/121,924.50
  6. Step 6: Final answer
    x = 102,869.35

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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.