Home / 137,609.53-189,725.37-89,125.81

Finding the Fourth Proportional to 137,609.53, 189,725.37 and 89,125.81

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Solution

The fourth proportional to 137,609.53, 189,725.37 and 89,125.81 is: 122,879.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,609.53 : 189,725.37 = 89,125.81 : x
  2. Step 2: Convert to fraction form
    137,609.53/189,725.37 = 89,125.81/x
  3. Step 3: Cross multiply
    137,609.53x = 189,725.37 × 89,125.81
  4. Step 4: Simplify right side
    137,609.53x = 16,909,427,278.80
  5. Step 5: Solve for x
    x = 16,909,427,278.80/137,609.53
  6. Step 6: Final answer
    x = 122,879.77

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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.