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Finding the Fourth Proportional to 144,676.85, 199,751.54 and 90,311.79

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Solution

The fourth proportional to 144,676.85, 199,751.54 and 90,311.79 is: 124,691.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,676.85 : 199,751.54 = 90,311.79 : x
  2. Step 2: Convert to fraction form
    144,676.85/199,751.54 = 90,311.79/x
  3. Step 3: Cross multiply
    144,676.85x = 199,751.54 × 90,311.79
  4. Step 4: Simplify right side
    144,676.85x = 18,039,918,506.77
  5. Step 5: Solve for x
    x = 18,039,918,506.77/144,676.85
  6. Step 6: Final answer
    x = 124,691.12

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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.