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Finding the Fourth Proportional to 171,680.76, 257,560.92 and 53,345.70

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Solution

The fourth proportional to 171,680.76, 257,560.92 and 53,345.70 is: 80,030.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,680.76 : 257,560.92 = 53,345.70 : x
  2. Step 2: Convert to fraction form
    171,680.76/257,560.92 = 53,345.70/x
  3. Step 3: Cross multiply
    171,680.76x = 257,560.92 × 53,345.70
  4. Step 4: Simplify right side
    171,680.76x = 13,739,767,570.04
  5. Step 5: Solve for x
    x = 13,739,767,570.04/171,680.76
  6. Step 6: Final answer
    x = 80,030.91

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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.