Home / 138,823.84-208,231.92-38,984.80

Finding the Fourth Proportional to 138,823.84, 208,231.92 and 38,984.80

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Solution

The fourth proportional to 138,823.84, 208,231.92 and 38,984.80 is: 58,476.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,823.84 : 208,231.92 = 38,984.80 : x
  2. Step 2: Convert to fraction form
    138,823.84/208,231.92 = 38,984.80/x
  3. Step 3: Cross multiply
    138,823.84x = 208,231.92 × 38,984.80
  4. Step 4: Simplify right side
    138,823.84x = 8,117,879,754.82
  5. Step 5: Solve for x
    x = 8,117,879,754.82/138,823.84
  6. Step 6: Final answer
    x = 58,476.12

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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.