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Finding the Fourth Proportional to 101,657.98, 140,112.90 and 67,605.64

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Solution

The fourth proportional to 101,657.98, 140,112.90 and 67,605.64 is: 93,179.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,657.98 : 140,112.90 = 67,605.64 : x
  2. Step 2: Convert to fraction form
    101,657.98/140,112.90 = 67,605.64/x
  3. Step 3: Cross multiply
    101,657.98x = 140,112.90 × 67,605.64
  4. Step 4: Simplify right side
    101,657.98x = 9,472,422,276.76
  5. Step 5: Solve for x
    x = 9,472,422,276.76/101,657.98
  6. Step 6: Final answer
    x = 93,179.33

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1.5x scale

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.