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Finding the Fourth Proportional to 155,447.78, 214,498.89 and 98,065.44

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Solution

The fourth proportional to 155,447.78, 214,498.89 and 98,065.44 is: 135,318.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,447.78 : 214,498.89 = 98,065.44 : x
  2. Step 2: Convert to fraction form
    155,447.78/214,498.89 = 98,065.44/x
  3. Step 3: Cross multiply
    155,447.78x = 214,498.89 × 98,065.44
  4. Step 4: Simplify right side
    155,447.78x = 21,034,928,027.36
  5. Step 5: Solve for x
    x = 21,034,928,027.36/155,447.78
  6. Step 6: Final answer
    x = 135,318.30

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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.