Home / 137,037.45-189,103.92-75,780.06

Finding the Fourth Proportional to 137,037.45, 189,103.92 and 75,780.06

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Solution

The fourth proportional to 137,037.45, 189,103.92 and 75,780.06 is: 104,572.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,037.45 : 189,103.92 = 75,780.06 : x
  2. Step 2: Convert to fraction form
    137,037.45/189,103.92 = 75,780.06/x
  3. Step 3: Cross multiply
    137,037.45x = 189,103.92 × 75,780.06
  4. Step 4: Simplify right side
    137,037.45x = 14,330,305,410.52
  5. Step 5: Solve for x
    x = 14,330,305,410.52/137,037.45
  6. Step 6: Final answer
    x = 104,572.18

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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.