Home / 89,610.19-123,395.13-87,621.18

Finding the Fourth Proportional to 89,610.19, 123,395.13 and 87,621.18

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Solution

The fourth proportional to 89,610.19, 123,395.13 and 87,621.18 is: 120,656.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,610.19 : 123,395.13 = 87,621.18 : x
  2. Step 2: Convert to fraction form
    89,610.19/123,395.13 = 87,621.18/x
  3. Step 3: Cross multiply
    89,610.19x = 123,395.13 × 87,621.18
  4. Step 4: Simplify right side
    89,610.19x = 10,812,026,896.85
  5. Step 5: Solve for x
    x = 10,812,026,896.85/89,610.19
  6. Step 6: Final answer
    x = 120,656.22

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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.