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Finding the Fourth Proportional to 121,101.99, 167,122.25 and 66,660.45

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Solution

The fourth proportional to 121,101.99, 167,122.25 and 66,660.45 is: 91,992.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,101.99 : 167,122.25 = 66,660.45 : x
  2. Step 2: Convert to fraction form
    121,101.99/167,122.25 = 66,660.45/x
  3. Step 3: Cross multiply
    121,101.99x = 167,122.25 × 66,660.45
  4. Step 4: Simplify right side
    121,101.99x = 11,140,444,056.71
  5. Step 5: Solve for x
    x = 11,140,444,056.71/121,101.99
  6. Step 6: Final answer
    x = 91,992.25

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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.