Home / 138,826.84-208,236.42-38,987.80

Finding the Fourth Proportional to 138,826.84, 208,236.42 and 38,987.80

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Solution

The fourth proportional to 138,826.84, 208,236.42 and 38,987.80 is: 58,480.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,826.84 : 208,236.42 = 38,987.80 : x
  2. Step 2: Convert to fraction form
    138,826.84/208,236.42 = 38,987.80/x
  3. Step 3: Cross multiply
    138,826.84x = 208,236.42 × 38,987.80
  4. Step 4: Simplify right side
    138,826.84x = 8,118,679,895.68
  5. Step 5: Solve for x
    x = 8,118,679,895.68/138,826.84
  6. Step 6: Final answer
    x = 58,480.62

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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.