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Finding the Fourth Proportional to 170,147.31, 255,146.98 and 51,790.92

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Solution

The fourth proportional to 170,147.31, 255,146.98 and 51,790.92 is: 77,663.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,147.31 : 255,146.98 = 51,790.92 : x
  2. Step 2: Convert to fraction form
    170,147.31/255,146.98 = 51,790.92/x
  3. Step 3: Cross multiply
    170,147.31x = 255,146.98 × 51,790.92
  4. Step 4: Simplify right side
    170,147.31x = 13,214,296,829.42
  5. Step 5: Solve for x
    x = 13,214,296,829.42/170,147.31
  6. Step 6: Final answer
    x = 77,663.86

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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.