Home / 137,286.22-189,458.59-76,856.60

Finding the Fourth Proportional to 137,286.22, 189,458.59 and 76,856.60

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Solution

The fourth proportional to 137,286.22, 189,458.59 and 76,856.60 is: 106,064.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,286.22 : 189,458.59 = 76,856.60 : x
  2. Step 2: Convert to fraction form
    137,286.22/189,458.59 = 76,856.60/x
  3. Step 3: Cross multiply
    137,286.22x = 189,458.59 × 76,856.60
  4. Step 4: Simplify right side
    137,286.22x = 14,561,143,068.19
  5. Step 5: Solve for x
    x = 14,561,143,068.19/137,286.22
  6. Step 6: Final answer
    x = 106,064.13

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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.