Home / 137,622.45-189,904.59-80,246.49

Finding the Fourth Proportional to 137,622.45, 189,904.59 and 80,246.49

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Solution

The fourth proportional to 137,622.45, 189,904.59 and 80,246.49 is: 110,731.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,622.45 : 189,904.59 = 80,246.49 : x
  2. Step 2: Convert to fraction form
    137,622.45/189,904.59 = 80,246.49/x
  3. Step 3: Cross multiply
    137,622.45x = 189,904.59 × 80,246.49
  4. Step 4: Simplify right side
    137,622.45x = 15,239,176,782.39
  5. Step 5: Solve for x
    x = 15,239,176,782.39/137,622.45
  6. Step 6: Final answer
    x = 110,731.76

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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.