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Finding the Fourth Proportional to 131,885.67, 197,852.85 and 43,143.87

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Solution

The fourth proportional to 131,885.67, 197,852.85 and 43,143.87 is: 64,723.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,885.67 : 197,852.85 = 43,143.87 : x
  2. Step 2: Convert to fraction form
    131,885.67/197,852.85 = 43,143.87/x
  3. Step 3: Cross multiply
    131,885.67x = 197,852.85 × 43,143.87
  4. Step 4: Simplify right side
    131,885.67x = 8,536,137,639.53
  5. Step 5: Solve for x
    x = 8,536,137,639.53/131,885.67
  6. Step 6: Final answer
    x = 64,723.77

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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.