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Finding the Fourth Proportional to 115,203.12, 158,982.06 and 64,214.43

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Solution

The fourth proportional to 115,203.12, 158,982.06 and 64,214.43 is: 88,616.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,203.12 : 158,982.06 = 64,214.43 : x
  2. Step 2: Convert to fraction form
    115,203.12/158,982.06 = 64,214.43/x
  3. Step 3: Cross multiply
    115,203.12x = 158,982.06 × 64,214.43
  4. Step 4: Simplify right side
    115,203.12x = 10,208,941,568.22
  5. Step 5: Solve for x
    x = 10,208,941,568.22/115,203.12
  6. Step 6: Final answer
    x = 88,616.89

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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.