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Finding the Fourth Proportional to 171,702.36, 257,531.66 and 66,449.32

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Solution

The fourth proportional to 171,702.36, 257,531.66 and 66,449.32 is: 99,665.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,702.36 : 257,531.66 = 66,449.32 : x
  2. Step 2: Convert to fraction form
    171,702.36/257,531.66 = 66,449.32/x
  3. Step 3: Cross multiply
    171,702.36x = 257,531.66 × 66,449.32
  4. Step 4: Simplify right side
    171,702.36x = 17,112,803,685.47
  5. Step 5: Solve for x
    x = 17,112,803,685.47/171,702.36
  6. Step 6: Final answer
    x = 99,665.51

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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.