Home / 137,659.11-189,958.39-77,221.36

Finding the Fourth Proportional to 137,659.11, 189,958.39 and 77,221.36

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Solution

The fourth proportional to 137,659.11, 189,958.39 and 77,221.36 is: 106,559.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,659.11 : 189,958.39 = 77,221.36 : x
  2. Step 2: Convert to fraction form
    137,659.11/189,958.39 = 77,221.36/x
  3. Step 3: Cross multiply
    137,659.11x = 189,958.39 × 77,221.36
  4. Step 4: Simplify right side
    137,659.11x = 14,668,845,219.21
  5. Step 5: Solve for x
    x = 14,668,845,219.21/137,659.11
  6. Step 6: Final answer
    x = 106,559.20

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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.