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Finding the Fourth Proportional to 121,122.42, 166,899.33 and 119,489.46

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Solution

The fourth proportional to 121,122.42, 166,899.33 and 119,489.46 is: 164,649.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,122.42 : 166,899.33 = 119,489.46 : x
  2. Step 2: Convert to fraction form
    121,122.42/166,899.33 = 119,489.46/x
  3. Step 3: Cross multiply
    121,122.42x = 166,899.33 × 119,489.46
  4. Step 4: Simplify right side
    121,122.42x = 19,942,710,816.06
  5. Step 5: Solve for x
    x = 19,942,710,816.06/121,122.42
  6. Step 6: Final answer
    x = 164,649.21

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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.