Home / 137,299.50-189,464.32-76,869.58

Finding the Fourth Proportional to 137,299.50, 189,464.32 and 76,869.58

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Solution

The fourth proportional to 137,299.50, 189,464.32 and 76,869.58 is: 106,074.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,299.50 : 189,464.32 = 76,869.58 : x
  2. Step 2: Convert to fraction form
    137,299.50/189,464.32 = 76,869.58/x
  3. Step 3: Cross multiply
    137,299.50x = 189,464.32 × 76,869.58
  4. Step 4: Simplify right side
    137,299.50x = 14,564,042,703.39
  5. Step 5: Solve for x
    x = 14,564,042,703.39/137,299.50
  6. Step 6: Final answer
    x = 106,074.99

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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.