Home / 134,538-185,680.26-86,929.80

Finding the Fourth Proportional to 134,538, 185,680.26 and 86,929.80

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Solution

The fourth proportional to 134,538, 185,680.26 and 86,929.80 is: 119,974.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,538 : 185,680.26 = 86,929.80 : x
  2. Step 2: Convert to fraction form
    134,538/185,680.26 = 86,929.80/x
  3. Step 3: Cross multiply
    134,538x = 185,680.26 × 86,929.80
  4. Step 4: Simplify right side
    134,538x = 16,141,147,865.75
  5. Step 5: Solve for x
    x = 16,141,147,865.75/134,538
  6. Step 6: Final answer
    x = 119,974.64

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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.