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Finding the Fourth Proportional to 171,465.59, 257,357.97 and 87,288.77

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Solution

The fourth proportional to 171,465.59, 257,357.97 and 87,288.77 is: 131,014.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,465.59 : 257,357.97 = 87,288.77 : x
  2. Step 2: Convert to fraction form
    171,465.59/257,357.97 = 87,288.77/x
  3. Step 3: Cross multiply
    171,465.59x = 257,357.97 × 87,288.77
  4. Step 4: Simplify right side
    171,465.59x = 22,464,460,570.57
  5. Step 5: Solve for x
    x = 22,464,460,570.57/171,465.59
  6. Step 6: Final answer
    x = 131,014.40

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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.