Home / 144,083.57-198,811.55-80,421.35

Finding the Fourth Proportional to 144,083.57, 198,811.55 and 80,421.35

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Solution

The fourth proportional to 144,083.57, 198,811.55 and 80,421.35 is: 110,968.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,083.57 : 198,811.55 = 80,421.35 : x
  2. Step 2: Convert to fraction form
    144,083.57/198,811.55 = 80,421.35/x
  3. Step 3: Cross multiply
    144,083.57x = 198,811.55 × 80,421.35
  4. Step 4: Simplify right side
    144,083.57x = 15,988,692,844.49
  5. Step 5: Solve for x
    x = 15,988,692,844.49/144,083.57
  6. Step 6: Final answer
    x = 110,968.19

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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.