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Finding the Fourth Proportional to 159,779.82, 220,576.04 and 99,369.93

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Solution

The fourth proportional to 159,779.82, 220,576.04 and 99,369.93 is: 137,180.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,779.82 : 220,576.04 = 99,369.93 : x
  2. Step 2: Convert to fraction form
    159,779.82/220,576.04 = 99,369.93/x
  3. Step 3: Cross multiply
    159,779.82x = 220,576.04 × 99,369.93
  4. Step 4: Simplify right side
    159,779.82x = 21,918,625,902.90
  5. Step 5: Solve for x
    x = 21,918,625,902.90/159,779.82
  6. Step 6: Final answer
    x = 137,180.19

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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.