Home / 129,269.56-178,389.62-71,908.60

Finding the Fourth Proportional to 129,269.56, 178,389.62 and 71,908.60

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Solution

The fourth proportional to 129,269.56, 178,389.62 and 71,908.60 is: 99,232.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,269.56 : 178,389.62 = 71,908.60 : x
  2. Step 2: Convert to fraction form
    129,269.56/178,389.62 = 71,908.60/x
  3. Step 3: Cross multiply
    129,269.56x = 178,389.62 × 71,908.60
  4. Step 4: Simplify right side
    129,269.56x = 12,827,747,828.73
  5. Step 5: Solve for x
    x = 12,827,747,828.73/129,269.56
  6. Step 6: Final answer
    x = 99,232.55

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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.