Home / 137,251.70-189,398.55-76,812.14

Finding the Fourth Proportional to 137,251.70, 189,398.55 and 76,812.14

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Solution

The fourth proportional to 137,251.70, 189,398.55 and 76,812.14 is: 105,995.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,251.70 : 189,398.55 = 76,812.14 : x
  2. Step 2: Convert to fraction form
    137,251.70/189,398.55 = 76,812.14/x
  3. Step 3: Cross multiply
    137,251.70x = 189,398.55 × 76,812.14
  4. Step 4: Simplify right side
    137,251.70x = 14,548,106,991.40
  5. Step 5: Solve for x
    x = 14,548,106,991.40/137,251.70
  6. Step 6: Final answer
    x = 105,995.83

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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.