Home / 112,669.40-155,481.49-64,919.90

Finding the Fourth Proportional to 112,669.40, 155,481.49 and 64,919.90

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Solution

The fourth proportional to 112,669.40, 155,481.49 and 64,919.90 is: 89,588.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,669.40 : 155,481.49 = 64,919.90 : x
  2. Step 2: Convert to fraction form
    112,669.40/155,481.49 = 64,919.90/x
  3. Step 3: Cross multiply
    112,669.40x = 155,481.49 × 64,919.90
  4. Step 4: Simplify right side
    112,669.40x = 10,093,843,252.50
  5. Step 5: Solve for x
    x = 10,093,843,252.50/112,669.40
  6. Step 6: Final answer
    x = 89,588.15

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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.