Home / 112,086.09-154,701.78-66,790.62

Finding the Fourth Proportional to 112,086.09, 154,701.78 and 66,790.62

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Solution

The fourth proportional to 112,086.09, 154,701.78 and 66,790.62 is: 92,184.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,086.09 : 154,701.78 = 66,790.62 : x
  2. Step 2: Convert to fraction form
    112,086.09/154,701.78 = 66,790.62/x
  3. Step 3: Cross multiply
    112,086.09x = 154,701.78 × 66,790.62
  4. Step 4: Simplify right side
    112,086.09x = 10,332,627,801.30
  5. Step 5: Solve for x
    x = 10,332,627,801.30/112,086.09
  6. Step 6: Final answer
    x = 92,184.75

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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.