Home / 121,133.54-166,991.02-85,212.07

Finding the Fourth Proportional to 121,133.54, 166,991.02 and 85,212.07

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Solution

The fourth proportional to 121,133.54, 166,991.02 and 85,212.07 is: 117,470.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,133.54 : 166,991.02 = 85,212.07 : x
  2. Step 2: Convert to fraction form
    121,133.54/166,991.02 = 85,212.07/x
  3. Step 3: Cross multiply
    121,133.54x = 166,991.02 × 85,212.07
  4. Step 4: Simplify right side
    121,133.54x = 14,229,649,855.10
  5. Step 5: Solve for x
    x = 14,229,649,855.10/121,133.54
  6. Step 6: Final answer
    x = 117,470.76

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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.