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Finding the Fourth Proportional to 171,937.60, 258,000.56 and 66,760.72

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Solution

The fourth proportional to 171,937.60, 258,000.56 and 66,760.72 is: 100,177.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,937.60 : 258,000.56 = 66,760.72 : x
  2. Step 2: Convert to fraction form
    171,937.60/258,000.56 = 66,760.72/x
  3. Step 3: Cross multiply
    171,937.60x = 258,000.56 × 66,760.72
  4. Step 4: Simplify right side
    171,937.60x = 17,224,303,146.00
  5. Step 5: Solve for x
    x = 17,224,303,146.00/171,937.60
  6. Step 6: Final answer
    x = 100,177.64

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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.