Home / 122,309.71-168,789.11-73,904.92

Finding the Fourth Proportional to 122,309.71, 168,789.11 and 73,904.92

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Solution

The fourth proportional to 122,309.71, 168,789.11 and 73,904.92 is: 101,989.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,309.71 : 168,789.11 = 73,904.92 : x
  2. Step 2: Convert to fraction form
    122,309.71/168,789.11 = 73,904.92/x
  3. Step 3: Cross multiply
    122,309.71x = 168,789.11 × 73,904.92
  4. Step 4: Simplify right side
    122,309.71x = 12,474,345,671.42
  5. Step 5: Solve for x
    x = 12,474,345,671.42/122,309.71
  6. Step 6: Final answer
    x = 101,989.82

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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.