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Finding the Fourth Proportional to 144,058.22, 198,811.34 and 79,539.90

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Solution

The fourth proportional to 144,058.22, 198,811.34 and 79,539.90 is: 109,771.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,058.22 : 198,811.34 = 79,539.90 : x
  2. Step 2: Convert to fraction form
    144,058.22/198,811.34 = 79,539.90/x
  3. Step 3: Cross multiply
    144,058.22x = 198,811.34 × 79,539.90
  4. Step 4: Simplify right side
    144,058.22x = 15,813,434,102.47
  5. Step 5: Solve for x
    x = 15,813,434,102.47/144,058.22
  6. Step 6: Final answer
    x = 109,771.13

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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.