Home / 137,138.24-189,268.30-76,712.24

Finding the Fourth Proportional to 137,138.24, 189,268.30 and 76,712.24

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Solution

The fourth proportional to 137,138.24, 189,268.30 and 76,712.24 is: 105,872.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,138.24 : 189,268.30 = 76,712.24 : x
  2. Step 2: Convert to fraction form
    137,138.24/189,268.30 = 76,712.24/x
  3. Step 3: Cross multiply
    137,138.24x = 189,268.30 × 76,712.24
  4. Step 4: Simplify right side
    137,138.24x = 14,519,195,253.99
  5. Step 5: Solve for x
    x = 14,519,195,253.99/137,138.24
  6. Step 6: Final answer
    x = 105,872.70

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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.