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Finding the Fourth Proportional to 155,781.24, 214,977.86 and 88,713.24

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Solution

The fourth proportional to 155,781.24, 214,977.86 and 88,713.24 is: 122,424.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,781.24 : 214,977.86 = 88,713.24 : x
  2. Step 2: Convert to fraction form
    155,781.24/214,977.86 = 88,713.24/x
  3. Step 3: Cross multiply
    155,781.24x = 214,977.86 × 88,713.24
  4. Step 4: Simplify right side
    155,781.24x = 19,071,382,488.87
  5. Step 5: Solve for x
    x = 19,071,382,488.87/155,781.24
  6. Step 6: Final answer
    x = 122,424.13

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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.