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Finding the Fourth Proportional to 171,991.10, 257,986.65 and 88,010.30

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Solution

The fourth proportional to 171,991.10, 257,986.65 and 88,010.30 is: 132,015.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,991.10 : 257,986.65 = 88,010.30 : x
  2. Step 2: Convert to fraction form
    171,991.10/257,986.65 = 88,010.30/x
  3. Step 3: Cross multiply
    171,991.10x = 257,986.65 × 88,010.30
  4. Step 4: Simplify right side
    171,991.10x = 22,705,482,462.50
  5. Step 5: Solve for x
    x = 22,705,482,462.50/171,991.10
  6. Step 6: Final answer
    x = 132,015.45

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1.5x scale

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.