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Finding the Fourth Proportional to 171,554.18, 257,243.52 and 71,687.12

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Solution

The fourth proportional to 171,554.18, 257,243.52 and 71,687.12 is: 107,494.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,554.18 : 257,243.52 = 71,687.12 : x
  2. Step 2: Convert to fraction form
    171,554.18/257,243.52 = 71,687.12/x
  3. Step 3: Cross multiply
    171,554.18x = 257,243.52 × 71,687.12
  4. Step 4: Simplify right side
    171,554.18x = 18,441,047,087.46
  5. Step 5: Solve for x
    x = 18,441,047,087.46/171,554.18
  6. Step 6: Final answer
    x = 107,494.01

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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.