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Finding the Fourth Proportional to 105,076.60, 145,005.66 and 67,350.82

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Solution

The fourth proportional to 105,076.60, 145,005.66 and 67,350.82 is: 92,944.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,076.60 : 145,005.66 = 67,350.82 : x
  2. Step 2: Convert to fraction form
    105,076.60/145,005.66 = 67,350.82/x
  3. Step 3: Cross multiply
    105,076.60x = 145,005.66 × 67,350.82
  4. Step 4: Simplify right side
    105,076.60x = 9,766,250,105.64
  5. Step 5: Solve for x
    x = 9,766,250,105.64/105,076.60
  6. Step 6: Final answer
    x = 92,944.10

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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.