Home / 138,828.84-208,280.12-72,249.27

Finding the Fourth Proportional to 138,828.84, 208,280.12 and 72,249.27

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Solution

The fourth proportional to 138,828.84, 208,280.12 and 72,249.27 is: 108,393.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,828.84 : 208,280.12 = 72,249.27 : x
  2. Step 2: Convert to fraction form
    138,828.84/208,280.12 = 72,249.27/x
  3. Step 3: Cross multiply
    138,828.84x = 208,280.12 × 72,249.27
  4. Step 4: Simplify right side
    138,828.84x = 15,048,086,264.27
  5. Step 5: Solve for x
    x = 15,048,086,264.27/138,828.84
  6. Step 6: Final answer
    x = 108,393.09

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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.