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Finding the Fourth Proportional to 171,790.80, 257,686.20 and 160,126.80

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Solution

The fourth proportional to 171,790.80, 257,686.20 and 160,126.80 is: 240,190.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,790.80 : 257,686.20 = 160,126.80 : x
  2. Step 2: Convert to fraction form
    171,790.80/257,686.20 = 160,126.80/x
  3. Step 3: Cross multiply
    171,790.80x = 257,686.20 × 160,126.80
  4. Step 4: Simplify right side
    171,790.80x = 41,262,466,610.16
  5. Step 5: Solve for x
    x = 41,262,466,610.16/171,790.80
  6. Step 6: Final answer
    x = 240,190.20

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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.