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Finding the Fourth Proportional to 170,289, 234,998.76 and 98,710.56

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Solution

The fourth proportional to 170,289, 234,998.76 and 98,710.56 is: 136,220.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,289 : 234,998.76 = 98,710.56 : x
  2. Step 2: Convert to fraction form
    170,289/234,998.76 = 98,710.56/x
  3. Step 3: Cross multiply
    170,289x = 234,998.76 × 98,710.56
  4. Step 4: Simplify right side
    170,289x = 23,196,859,198.91
  5. Step 5: Solve for x
    x = 23,196,859,198.91/170,289
  6. Step 6: Final answer
    x = 136,220.54

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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.