Home / 171,438.40-257,198.66-71,543.02

Finding the Fourth Proportional to 171,438.40, 257,198.66 and 71,543.02

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Solution

The fourth proportional to 171,438.40, 257,198.66 and 71,543.02 is: 107,331.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,438.40 : 257,198.66 = 71,543.02 : x
  2. Step 2: Convert to fraction form
    171,438.40/257,198.66 = 71,543.02/x
  3. Step 3: Cross multiply
    171,438.40x = 257,198.66 × 71,543.02
  4. Step 4: Simplify right side
    171,438.40x = 18,400,768,876.35
  5. Step 5: Solve for x
    x = 18,400,768,876.35/171,438.40
  6. Step 6: Final answer
    x = 107,331.66

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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.