Home / 137,043.62-189,178.49-83,345.88

Finding the Fourth Proportional to 137,043.62, 189,178.49 and 83,345.88

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Solution

The fourth proportional to 137,043.62, 189,178.49 and 83,345.88 is: 115,052.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,043.62 : 189,178.49 = 83,345.88 : x
  2. Step 2: Convert to fraction form
    137,043.62/189,178.49 = 83,345.88/x
  3. Step 3: Cross multiply
    137,043.62x = 189,178.49 × 83,345.88
  4. Step 4: Simplify right side
    137,043.62x = 15,767,247,309.39
  5. Step 5: Solve for x
    x = 15,767,247,309.39/137,043.62
  6. Step 6: Final answer
    x = 115,052.77

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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.