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Finding the Fourth Proportional to 129,964.65, 194,946.98 and 36,470.40

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Solution

The fourth proportional to 129,964.65, 194,946.98 and 36,470.40 is: 54,705.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,964.65 : 194,946.98 = 36,470.40 : x
  2. Step 2: Convert to fraction form
    129,964.65/194,946.98 = 36,470.40/x
  3. Step 3: Cross multiply
    129,964.65x = 194,946.98 × 36,470.40
  4. Step 4: Simplify right side
    129,964.65x = 7,109,794,157.04
  5. Step 5: Solve for x
    x = 7,109,794,157.04/129,964.65
  6. Step 6: Final answer
    x = 54,705.60

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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.