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Finding the Fourth Proportional to 129,490.97, 194,185.40 and 62,911.40

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Solution

The fourth proportional to 129,490.97, 194,185.40 and 62,911.40 is: 94,342.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,490.97 : 194,185.40 = 62,911.40 : x
  2. Step 2: Convert to fraction form
    129,490.97/194,185.40 = 62,911.40/x
  3. Step 3: Cross multiply
    129,490.97x = 194,185.40 × 62,911.40
  4. Step 4: Simplify right side
    129,490.97x = 12,216,474,088.08
  5. Step 5: Solve for x
    x = 12,216,474,088.08/129,490.97
  6. Step 6: Final answer
    x = 94,342.29

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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.