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Finding the Fourth Proportional to 131,754.79, 181,821.57 and 71,325.39

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Solution

The fourth proportional to 131,754.79, 181,821.57 and 71,325.39 is: 98,429.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,754.79 : 181,821.57 = 71,325.39 : x
  2. Step 2: Convert to fraction form
    131,754.79/181,821.57 = 71,325.39/x
  3. Step 3: Cross multiply
    131,754.79x = 181,821.57 × 71,325.39
  4. Step 4: Simplify right side
    131,754.79x = 12,968,494,694.86
  5. Step 5: Solve for x
    x = 12,968,494,694.86/131,754.79
  6. Step 6: Final answer
    x = 98,429.02

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.