Home / 135,694.95-187,234.81-81,943.98

Finding the Fourth Proportional to 135,694.95, 187,234.81 and 81,943.98

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Solution

The fourth proportional to 135,694.95, 187,234.81 and 81,943.98 is: 113,068.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,694.95 : 187,234.81 = 81,943.98 : x
  2. Step 2: Convert to fraction form
    135,694.95/187,234.81 = 81,943.98/x
  3. Step 3: Cross multiply
    135,694.95x = 187,234.81 × 81,943.98
  4. Step 4: Simplify right side
    135,694.95x = 15,342,765,525.94
  5. Step 5: Solve for x
    x = 15,342,765,525.94/135,694.95
  6. Step 6: Final answer
    x = 113,068.07

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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.