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Finding the Fourth Proportional to 171,465.58, 257,357.96 and 87,288.76

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Solution

The fourth proportional to 171,465.58, 257,357.96 and 87,288.76 is: 131,014.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,465.58 : 257,357.96 = 87,288.76 : x
  2. Step 2: Convert to fraction form
    171,465.58/257,357.96 = 87,288.76/x
  3. Step 3: Cross multiply
    171,465.58x = 257,357.96 × 87,288.76
  4. Step 4: Simplify right side
    171,465.58x = 22,464,456,768.09
  5. Step 5: Solve for x
    x = 22,464,456,768.09/171,465.58
  6. Step 6: Final answer
    x = 131,014.38

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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.