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Finding the Fourth Proportional to 239,513.64, 359,171.64 and 81,754.80

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Solution

The fourth proportional to 239,513.64, 359,171.64 and 81,754.80 is: 122,598.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,513.64 : 359,171.64 = 81,754.80 : x
  2. Step 2: Convert to fraction form
    239,513.64/359,171.64 = 81,754.80/x
  3. Step 3: Cross multiply
    239,513.64x = 359,171.64 × 81,754.80
  4. Step 4: Simplify right side
    239,513.64x = 29,364,005,593.87
  5. Step 5: Solve for x
    x = 29,364,005,593.87/239,513.64
  6. Step 6: Final answer
    x = 122,598.47

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.