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Finding the Fourth Proportional to 168,718.82, 253,141.41 and 87,615.30

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Solution

The fourth proportional to 168,718.82, 253,141.41 and 87,615.30 is: 131,455.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,718.82 : 253,141.41 = 87,615.30 : x
  2. Step 2: Convert to fraction form
    168,718.82/253,141.41 = 87,615.30/x
  3. Step 3: Cross multiply
    168,718.82x = 253,141.41 × 87,615.30
  4. Step 4: Simplify right side
    168,718.82x = 22,179,060,579.57
  5. Step 5: Solve for x
    x = 22,179,060,579.57/168,718.82
  6. Step 6: Final answer
    x = 131,455.76

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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.