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Finding the Fourth Proportional to 121,994.42, 183,009.12 and 37,761.98

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Solution

The fourth proportional to 121,994.42, 183,009.12 and 37,761.98 is: 56,648.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,994.42 : 183,009.12 = 37,761.98 : x
  2. Step 2: Convert to fraction form
    121,994.42/183,009.12 = 37,761.98/x
  3. Step 3: Cross multiply
    121,994.42x = 183,009.12 × 37,761.98
  4. Step 4: Simplify right side
    121,994.42x = 6,910,786,729.26
  5. Step 5: Solve for x
    x = 6,910,786,729.26/121,994.42
  6. Step 6: Final answer
    x = 56,648.38

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.