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Finding the Fourth Proportional to 129,807.52, 194,731.32 and 54,928.08

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Solution

The fourth proportional to 129,807.52, 194,731.32 and 54,928.08 is: 82,400.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,807.52 : 194,731.32 = 54,928.08 : x
  2. Step 2: Convert to fraction form
    129,807.52/194,731.32 = 54,928.08/x
  3. Step 3: Cross multiply
    129,807.52x = 194,731.32 × 54,928.08
  4. Step 4: Simplify right side
    129,807.52x = 10,696,217,523.47
  5. Step 5: Solve for x
    x = 10,696,217,523.47/129,807.52
  6. Step 6: Final answer
    x = 82,400.60

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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.