Home / 137,103.76-189,224.58-83,405.62

Finding the Fourth Proportional to 137,103.76, 189,224.58 and 83,405.62

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Solution

The fourth proportional to 137,103.76, 189,224.58 and 83,405.62 is: 115,112.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,103.76 : 189,224.58 = 83,405.62 : x
  2. Step 2: Convert to fraction form
    137,103.76/189,224.58 = 83,405.62/x
  3. Step 3: Cross multiply
    137,103.76x = 189,224.58 × 83,405.62
  4. Step 4: Simplify right side
    137,103.76x = 15,782,393,414.14
  5. Step 5: Solve for x
    x = 15,782,393,414.14/137,103.76
  6. Step 6: Final answer
    x = 115,112.77

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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.