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Finding the Fourth Proportional to 159,716.21, 239,740.49 and 117,643.79

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Solution

The fourth proportional to 159,716.21, 239,740.49 and 117,643.79 is: 176,588.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,716.21 : 239,740.49 = 117,643.79 : x
  2. Step 2: Convert to fraction form
    159,716.21/239,740.49 = 117,643.79/x
  3. Step 3: Cross multiply
    159,716.21x = 239,740.49 × 117,643.79
  4. Step 4: Simplify right side
    159,716.21x = 28,203,980,753.52
  5. Step 5: Solve for x
    x = 28,203,980,753.52/159,716.21
  6. Step 6: Final answer
    x = 176,588.10

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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.