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Finding the Fourth Proportional to 171,876.15, 257,868.90 and 109,087.38

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Solution

The fourth proportional to 171,876.15, 257,868.90 and 109,087.38 is: 163,665.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,876.15 : 257,868.90 = 109,087.38 : x
  2. Step 2: Convert to fraction form
    171,876.15/257,868.90 = 109,087.38/x
  3. Step 3: Cross multiply
    171,876.15x = 257,868.90 × 109,087.38
  4. Step 4: Simplify right side
    171,876.15x = 28,130,242,684.48
  5. Step 5: Solve for x
    x = 28,130,242,684.48/171,876.15
  6. Step 6: Final answer
    x = 163,665.77

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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.