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Finding the Fourth Proportional to 115,735.96, 172,339.17 and 111,479.54

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Solution

The fourth proportional to 115,735.96, 172,339.17 and 111,479.54 is: 166,001.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,735.96 : 172,339.17 = 111,479.54 : x
  2. Step 2: Convert to fraction form
    115,735.96/172,339.17 = 111,479.54/x
  3. Step 3: Cross multiply
    115,735.96x = 172,339.17 × 111,479.54
  4. Step 4: Simplify right side
    115,735.96x = 19,212,290,838.18
  5. Step 5: Solve for x
    x = 19,212,290,838.18/115,735.96
  6. Step 6: Final answer
    x = 166,001.05

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.