Home / 121,196.71-167,194.02-85,406.41

Finding the Fourth Proportional to 121,196.71, 167,194.02 and 85,406.41

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Solution

The fourth proportional to 121,196.71, 167,194.02 and 85,406.41 is: 117,820.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,196.71 : 167,194.02 = 85,406.41 : x
  2. Step 2: Convert to fraction form
    121,196.71/167,194.02 = 85,406.41/x
  3. Step 3: Cross multiply
    121,196.71x = 167,194.02 × 85,406.41
  4. Step 4: Simplify right side
    121,196.71x = 14,279,441,021.67
  5. Step 5: Solve for x
    x = 14,279,441,021.67/121,196.71
  6. Step 6: Final answer
    x = 117,820.37

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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.