Home / 112,255.81-154,873.94-71,991.78

Finding the Fourth Proportional to 112,255.81, 154,873.94 and 71,991.78

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Solution

The fourth proportional to 112,255.81, 154,873.94 and 71,991.78 is: 99,323.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,255.81 : 154,873.94 = 71,991.78 : x
  2. Step 2: Convert to fraction form
    112,255.81/154,873.94 = 71,991.78/x
  3. Step 3: Cross multiply
    112,255.81x = 154,873.94 × 71,991.78
  4. Step 4: Simplify right side
    112,255.81x = 11,149,650,616.21
  5. Step 5: Solve for x
    x = 11,149,650,616.21/112,255.81
  6. Step 6: Final answer
    x = 99,323.60

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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.