Home / 137,181.10-189,299.12-76,747

Finding the Fourth Proportional to 137,181.10, 189,299.12 and 76,747

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Solution

The fourth proportional to 137,181.10, 189,299.12 and 76,747 is: 105,904.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,181.10 : 189,299.12 = 76,747 : x
  2. Step 2: Convert to fraction form
    137,181.10/189,299.12 = 76,747/x
  3. Step 3: Cross multiply
    137,181.10x = 189,299.12 × 76,747
  4. Step 4: Simplify right side
    137,181.10x = 14,528,139,562.64
  5. Step 5: Solve for x
    x = 14,528,139,562.64/137,181.10
  6. Step 6: Final answer
    x = 105,904.82

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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.