Home / 109,400.72-150,987.09-61,669.44

Finding the Fourth Proportional to 109,400.72, 150,987.09 and 61,669.44

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Solution

The fourth proportional to 109,400.72, 150,987.09 and 61,669.44 is: 85,111.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,400.72 : 150,987.09 = 61,669.44 : x
  2. Step 2: Convert to fraction form
    109,400.72/150,987.09 = 61,669.44/x
  3. Step 3: Cross multiply
    109,400.72x = 150,987.09 × 61,669.44
  4. Step 4: Simplify right side
    109,400.72x = 9,311,289,287.53
  5. Step 5: Solve for x
    x = 9,311,289,287.53/109,400.72
  6. Step 6: Final answer
    x = 85,111.78

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1.5x scale

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.