Home / 105,811.92-145,997.64-61,074

Finding the Fourth Proportional to 105,811.92, 145,997.64 and 61,074

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Solution

The fourth proportional to 105,811.92, 145,997.64 and 61,074 is: 84,268.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,811.92 : 145,997.64 = 61,074 : x
  2. Step 2: Convert to fraction form
    105,811.92/145,997.64 = 61,074/x
  3. Step 3: Cross multiply
    105,811.92x = 145,997.64 × 61,074
  4. Step 4: Simplify right side
    105,811.92x = 8,916,659,865.36
  5. Step 5: Solve for x
    x = 8,916,659,865.36/105,811.92
  6. Step 6: Final answer
    x = 84,268.95

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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.