Home / 86,949.40-130,424.10-73,171.30

Finding the Fourth Proportional to 86,949.40, 130,424.10 and 73,171.30

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Solution

The fourth proportional to 86,949.40, 130,424.10 and 73,171.30 is: 109,756.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,949.40 : 130,424.10 = 73,171.30 : x
  2. Step 2: Convert to fraction form
    86,949.40/130,424.10 = 73,171.30/x
  3. Step 3: Cross multiply
    86,949.40x = 130,424.10 × 73,171.30
  4. Step 4: Simplify right side
    86,949.40x = 9,543,300,948.33
  5. Step 5: Solve for x
    x = 9,543,300,948.33/86,949.40
  6. Step 6: Final answer
    x = 109,756.95

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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.