Home / 121,513.41-167,684.58-66,320.61

Finding the Fourth Proportional to 121,513.41, 167,684.58 and 66,320.61

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Solution

The fourth proportional to 121,513.41, 167,684.58 and 66,320.61 is: 91,520.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,513.41 : 167,684.58 = 66,320.61 : x
  2. Step 2: Convert to fraction form
    121,513.41/167,684.58 = 66,320.61/x
  3. Step 3: Cross multiply
    121,513.41x = 167,684.58 × 66,320.61
  4. Step 4: Simplify right side
    121,513.41x = 11,120,943,633.19
  5. Step 5: Solve for x
    x = 11,120,943,633.19/121,513.41
  6. Step 6: Final answer
    x = 91,520.30

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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.