Home / 137,150.30-189,275.19-76,723.49

Finding the Fourth Proportional to 137,150.30, 189,275.19 and 76,723.49

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Solution

The fourth proportional to 137,150.30, 189,275.19 and 76,723.49 is: 105,882.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,150.30 : 189,275.19 = 76,723.49 : x
  2. Step 2: Convert to fraction form
    137,150.30/189,275.19 = 76,723.49/x
  3. Step 3: Cross multiply
    137,150.30x = 189,275.19 × 76,723.49
  4. Step 4: Simplify right side
    137,150.30x = 14,521,853,147.21
  5. Step 5: Solve for x
    x = 14,521,853,147.21/137,150.30
  6. Step 6: Final answer
    x = 105,882.77

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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.