Home / 137,568.28-189,841.98-77,138.86

Finding the Fourth Proportional to 137,568.28, 189,841.98 and 77,138.86

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Solution

The fourth proportional to 137,568.28, 189,841.98 and 77,138.86 is: 106,450.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,568.28 : 189,841.98 = 77,138.86 : x
  2. Step 2: Convert to fraction form
    137,568.28/189,841.98 = 77,138.86/x
  3. Step 3: Cross multiply
    137,568.28x = 189,841.98 × 77,138.86
  4. Step 4: Simplify right side
    137,568.28x = 14,644,193,917.34
  5. Step 5: Solve for x
    x = 14,644,193,917.34/137,568.28
  6. Step 6: Final answer
    x = 106,450.37

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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.