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Finding the Fourth Proportional to 131,676.87, 181,737.74 and 74,333.67

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Solution

The fourth proportional to 131,676.87, 181,737.74 and 74,333.67 is: 102,593.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,676.87 : 181,737.74 = 74,333.67 : x
  2. Step 2: Convert to fraction form
    131,676.87/181,737.74 = 74,333.67/x
  3. Step 3: Cross multiply
    131,676.87x = 181,737.74 × 74,333.67
  4. Step 4: Simplify right side
    131,676.87x = 13,509,232,820.04
  5. Step 5: Solve for x
    x = 13,509,232,820.04/131,676.87
  6. Step 6: Final answer
    x = 102,593.82

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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.