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Finding the Fourth Proportional to 129,861.10, 194,828.10 and 63,303.40

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Solution

The fourth proportional to 129,861.10, 194,828.10 and 63,303.40 is: 94,972.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,861.10 : 194,828.10 = 63,303.40 : x
  2. Step 2: Convert to fraction form
    129,861.10/194,828.10 = 63,303.40/x
  3. Step 3: Cross multiply
    129,861.10x = 194,828.10 × 63,303.40
  4. Step 4: Simplify right side
    129,861.10x = 12,333,281,145.54
  5. Step 5: Solve for x
    x = 12,333,281,145.54/129,861.10
  6. Step 6: Final answer
    x = 94,972.87

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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.