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Finding the Fourth Proportional to 129,953, 195,007.26 and 56,081

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Solution

The fourth proportional to 129,953, 195,007.26 and 56,081 is: 84,155.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,953 : 195,007.26 = 56,081 : x
  2. Step 2: Convert to fraction form
    129,953/195,007.26 = 56,081/x
  3. Step 3: Cross multiply
    129,953x = 195,007.26 × 56,081
  4. Step 4: Simplify right side
    129,953x = 10,936,202,148.06
  5. Step 5: Solve for x
    x = 10,936,202,148.06/129,953
  6. Step 6: Final answer
    x = 84,155.06

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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.