Home / 86,974.67-119,125.72-81,868.03

Finding the Fourth Proportional to 86,974.67, 119,125.72 and 81,868.03

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Solution

The fourth proportional to 86,974.67, 119,125.72 and 81,868.03 is: 112,131.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,974.67 : 119,125.72 = 81,868.03 : x
  2. Step 2: Convert to fraction form
    86,974.67/119,125.72 = 81,868.03/x
  3. Step 3: Cross multiply
    86,974.67x = 119,125.72 × 81,868.03
  4. Step 4: Simplify right side
    86,974.67x = 9,752,587,823.25
  5. Step 5: Solve for x
    x = 9,752,587,823.25/86,974.67
  6. Step 6: Final answer
    x = 112,131.35

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.