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Finding the Fourth Proportional to 131,661.62, 181,693.06 and 71,232.23

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Solution

The fourth proportional to 131,661.62, 181,693.06 and 71,232.23 is: 98,300.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,661.62 : 181,693.06 = 71,232.23 : x
  2. Step 2: Convert to fraction form
    131,661.62/181,693.06 = 71,232.23/x
  3. Step 3: Cross multiply
    131,661.62x = 181,693.06 × 71,232.23
  4. Step 4: Simplify right side
    131,661.62x = 12,942,401,093.45
  5. Step 5: Solve for x
    x = 12,942,401,093.45/131,661.62
  6. Step 6: Final answer
    x = 98,300.49

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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.