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Finding the Fourth Proportional to 173,112.84, 259,702.94 and 66,489

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Solution

The fourth proportional to 173,112.84, 259,702.94 and 66,489 is: 99,746.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    173,112.84 : 259,702.94 = 66,489 : x
  2. Step 2: Convert to fraction form
    173,112.84/259,702.94 = 66,489/x
  3. Step 3: Cross multiply
    173,112.84x = 259,702.94 × 66,489
  4. Step 4: Simplify right side
    173,112.84x = 17,267,388,445.22
  5. Step 5: Solve for x
    x = 17,267,388,445.22/173,112.84
  6. Step 6: Final answer
    x = 99,746.43

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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.