Home / 137,239.24-189,388.92-76,809.20

Finding the Fourth Proportional to 137,239.24, 189,388.92 and 76,809.20

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Solution

The fourth proportional to 137,239.24, 189,388.92 and 76,809.20 is: 105,996.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,239.24 : 189,388.92 = 76,809.20 : x
  2. Step 2: Convert to fraction form
    137,239.24/189,388.92 = 76,809.20/x
  3. Step 3: Cross multiply
    137,239.24x = 189,388.92 × 76,809.20
  4. Step 4: Simplify right side
    137,239.24x = 14,546,811,434.06
  5. Step 5: Solve for x
    x = 14,546,811,434.06/137,239.24
  6. Step 6: Final answer
    x = 105,996.01

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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.