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Finding the Fourth Proportional to 155,843.36, 215,063.87 and 88,775.36

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Solution

The fourth proportional to 155,843.36, 215,063.87 and 88,775.36 is: 122,510.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,843.36 : 215,063.87 = 88,775.36 : x
  2. Step 2: Convert to fraction form
    155,843.36/215,063.87 = 88,775.36/x
  3. Step 3: Cross multiply
    155,843.36x = 215,063.87 × 88,775.36
  4. Step 4: Simplify right side
    155,843.36x = 19,092,370,963.05
  5. Step 5: Solve for x
    x = 19,092,370,963.05/155,843.36
  6. Step 6: Final answer
    x = 122,510.01

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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.