Home / 137,129.16-189,247.92-76,705.44

Finding the Fourth Proportional to 137,129.16, 189,247.92 and 76,705.44

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Solution

The fourth proportional to 137,129.16, 189,247.92 and 76,705.44 is: 105,858.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,129.16 : 189,247.92 = 76,705.44 : x
  2. Step 2: Convert to fraction form
    137,129.16/189,247.92 = 76,705.44/x
  3. Step 3: Cross multiply
    137,129.16x = 189,247.92 × 76,705.44
  4. Step 4: Simplify right side
    137,129.16x = 14,516,344,972.68
  5. Step 5: Solve for x
    x = 14,516,344,972.68/137,129.16
  6. Step 6: Final answer
    x = 105,858.92

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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.