Home / 138,806.95-191,554.03-75,144.60

Finding the Fourth Proportional to 138,806.95, 191,554.03 and 75,144.60

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Solution

The fourth proportional to 138,806.95, 191,554.03 and 75,144.60 is: 103,699.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,806.95 : 191,554.03 = 75,144.60 : x
  2. Step 2: Convert to fraction form
    138,806.95/191,554.03 = 75,144.60/x
  3. Step 3: Cross multiply
    138,806.95x = 191,554.03 × 75,144.60
  4. Step 4: Simplify right side
    138,806.95x = 14,394,250,962.74
  5. Step 5: Solve for x
    x = 14,394,250,962.74/138,806.95
  6. Step 6: Final answer
    x = 103,699.79

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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.