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Finding the Fourth Proportional to 114,844.40, 171,926.40 and 85,392.80

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Solution

The fourth proportional to 114,844.40, 171,926.40 and 85,392.80 is: 127,836.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    114,844.40 : 171,926.40 = 85,392.80 : x
  2. Step 2: Convert to fraction form
    114,844.40/171,926.40 = 85,392.80/x
  3. Step 3: Cross multiply
    114,844.40x = 171,926.40 × 85,392.80
  4. Step 4: Simplify right side
    114,844.40x = 14,681,276,689.92
  5. Step 5: Solve for x
    x = 14,681,276,689.92/114,844.40
  6. Step 6: Final answer
    x = 127,836.24

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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.