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Finding the Fourth Proportional to 171,962.70, 257,944.05 and 108,977.10

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Solution

The fourth proportional to 171,962.70, 257,944.05 and 108,977.10 is: 163,465.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,962.70 : 257,944.05 = 108,977.10 : x
  2. Step 2: Convert to fraction form
    171,962.70/257,944.05 = 108,977.10/x
  3. Step 3: Cross multiply
    171,962.70x = 257,944.05 × 108,977.10
  4. Step 4: Simplify right side
    171,962.70x = 28,109,994,531.26
  5. Step 5: Solve for x
    x = 28,109,994,531.26/171,962.70
  6. Step 6: Final answer
    x = 163,465.65

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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.