Home / 121,217.72-181,626.10-61,971.89

Finding the Fourth Proportional to 121,217.72, 181,626.10 and 61,971.89

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Solution

The fourth proportional to 121,217.72, 181,626.10 and 61,971.89 is: 92,855.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,217.72 : 181,626.10 = 61,971.89 : x
  2. Step 2: Convert to fraction form
    121,217.72/181,626.10 = 61,971.89/x
  3. Step 3: Cross multiply
    121,217.72x = 181,626.10 × 61,971.89
  4. Step 4: Simplify right side
    121,217.72x = 11,255,711,627.27
  5. Step 5: Solve for x
    x = 11,255,711,627.27/121,217.72
  6. Step 6: Final answer
    x = 92,855.34

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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.