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Finding the Fourth Proportional to 123,754.60, 170,780.35 and 67,165.98

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Solution

The fourth proportional to 123,754.60, 170,780.35 and 67,165.98 is: 92,688.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,754.60 : 170,780.35 = 67,165.98 : x
  2. Step 2: Convert to fraction form
    123,754.60/170,780.35 = 67,165.98/x
  3. Step 3: Cross multiply
    123,754.60x = 170,780.35 × 67,165.98
  4. Step 4: Simplify right side
    123,754.60x = 11,470,629,572.49
  5. Step 5: Solve for x
    x = 11,470,629,572.49/123,754.60
  6. Step 6: Final answer
    x = 92,688.51

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.