Home / 112,238.78-154,916.01-64,519.80

Finding the Fourth Proportional to 112,238.78, 154,916.01 and 64,519.80

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Solution

The fourth proportional to 112,238.78, 154,916.01 and 64,519.80 is: 89,052.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,238.78 : 154,916.01 = 64,519.80 : x
  2. Step 2: Convert to fraction form
    112,238.78/154,916.01 = 64,519.80/x
  3. Step 3: Cross multiply
    112,238.78x = 154,916.01 × 64,519.80
  4. Step 4: Simplify right side
    112,238.78x = 9,995,149,982.00
  5. Step 5: Solve for x
    x = 9,995,149,982.00/112,238.78
  6. Step 6: Final answer
    x = 89,052.56

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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.