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Finding the Fourth Proportional to 171,785.88, 257,675.67 and 70,562.43

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Solution

The fourth proportional to 171,785.88, 257,675.67 and 70,562.43 is: 105,842.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,785.88 : 257,675.67 = 70,562.43 : x
  2. Step 2: Convert to fraction form
    171,785.88/257,675.67 = 70,562.43/x
  3. Step 3: Cross multiply
    171,785.88x = 257,675.67 × 70,562.43
  4. Step 4: Simplify right side
    171,785.88x = 18,182,221,427.08
  5. Step 5: Solve for x
    x = 18,182,221,427.08/171,785.88
  6. Step 6: Final answer
    x = 105,842.35

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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.