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Finding the Fourth Proportional to 115,203.45, 158,961.50 and 64,205.01

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Solution

The fourth proportional to 115,203.45, 158,961.50 and 64,205.01 is: 88,592.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,203.45 : 158,961.50 = 64,205.01 : x
  2. Step 2: Convert to fraction form
    115,203.45/158,961.50 = 64,205.01/x
  3. Step 3: Cross multiply
    115,203.45x = 158,961.50 × 64,205.01
  4. Step 4: Simplify right side
    115,203.45x = 10,206,124,376.09
  5. Step 5: Solve for x
    x = 10,206,124,376.09/115,203.45
  6. Step 6: Final answer
    x = 88,592.18

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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.