Home / 109,839.84-164,760.63-71,921.07

Finding the Fourth Proportional to 109,839.84, 164,760.63 and 71,921.07

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Solution

The fourth proportional to 109,839.84, 164,760.63 and 71,921.07 is: 107,882.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,839.84 : 164,760.63 = 71,921.07 : x
  2. Step 2: Convert to fraction form
    109,839.84/164,760.63 = 71,921.07/x
  3. Step 3: Cross multiply
    109,839.84x = 164,760.63 × 71,921.07
  4. Step 4: Simplify right side
    109,839.84x = 11,849,760,803.47
  5. Step 5: Solve for x
    x = 11,849,760,803.47/109,839.84
  6. Step 6: Final answer
    x = 107,882.17

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.