Home / 121,619.66-167,686.20-100,033.97

Finding the Fourth Proportional to 121,619.66, 167,686.20 and 100,033.97

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Solution

The fourth proportional to 121,619.66, 167,686.20 and 100,033.97 is: 137,924.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,619.66 : 167,686.20 = 100,033.97 : x
  2. Step 2: Convert to fraction form
    121,619.66/167,686.20 = 100,033.97/x
  3. Step 3: Cross multiply
    121,619.66x = 167,686.20 × 100,033.97
  4. Step 4: Simplify right side
    121,619.66x = 16,774,315,461.78
  5. Step 5: Solve for x
    x = 16,774,315,461.78/121,619.66
  6. Step 6: Final answer
    x = 137,924.38

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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.