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Finding the Fourth Proportional to 115,198.56, 158,986.98 and 64,215.96

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Solution

The fourth proportional to 115,198.56, 158,986.98 and 64,215.96 is: 88,625.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,198.56 : 158,986.98 = 64,215.96 : x
  2. Step 2: Convert to fraction form
    115,198.56/158,986.98 = 64,215.96/x
  3. Step 3: Cross multiply
    115,198.56x = 158,986.98 × 64,215.96
  4. Step 4: Simplify right side
    115,198.56x = 10,209,501,548.20
  5. Step 5: Solve for x
    x = 10,209,501,548.20/115,198.56
  6. Step 6: Final answer
    x = 88,625.25

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1.5x scale

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.