Home / 135,921.92-187,558.54-79,366.10

Finding the Fourth Proportional to 135,921.92, 187,558.54 and 79,366.10

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Solution

The fourth proportional to 135,921.92, 187,558.54 and 79,366.10 is: 109,517.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,921.92 : 187,558.54 = 79,366.10 : x
  2. Step 2: Convert to fraction form
    135,921.92/187,558.54 = 79,366.10/x
  3. Step 3: Cross multiply
    135,921.92x = 187,558.54 × 79,366.10
  4. Step 4: Simplify right side
    135,921.92x = 14,885,788,705.29
  5. Step 5: Solve for x
    x = 14,885,788,705.29/135,921.92
  6. Step 6: Final answer
    x = 109,517.21

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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.