Home / 129,247.89-178,360.34-71,886.66

Finding the Fourth Proportional to 129,247.89, 178,360.34 and 71,886.66

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Solution

The fourth proportional to 129,247.89, 178,360.34 and 71,886.66 is: 99,202.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,247.89 : 178,360.34 = 71,886.66 : x
  2. Step 2: Convert to fraction form
    129,247.89/178,360.34 = 71,886.66/x
  3. Step 3: Cross multiply
    129,247.89x = 178,360.34 × 71,886.66
  4. Step 4: Simplify right side
    129,247.89x = 12,821,728,759.63
  5. Step 5: Solve for x
    x = 12,821,728,759.63/129,247.89
  6. Step 6: Final answer
    x = 99,202.62

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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.