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Finding the Fourth Proportional to 171,791, 257,682.30 and 66,610.02

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Solution

The fourth proportional to 171,791, 257,682.30 and 66,610.02 is: 99,913.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,791 : 257,682.30 = 66,610.02 : x
  2. Step 2: Convert to fraction form
    171,791/257,682.30 = 66,610.02/x
  3. Step 3: Cross multiply
    171,791x = 257,682.30 × 66,610.02
  4. Step 4: Simplify right side
    171,791x = 17,164,223,156.65
  5. Step 5: Solve for x
    x = 17,164,223,156.65/171,791
  6. Step 6: Final answer
    x = 99,913.40

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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.