Home / 189,765.81-261,890.42-113,288.04

Finding the Fourth Proportional to 189,765.81, 261,890.42 and 113,288.04

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Solution

The fourth proportional to 189,765.81, 261,890.42 and 113,288.04 is: 156,345.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,765.81 : 261,890.42 = 113,288.04 : x
  2. Step 2: Convert to fraction form
    189,765.81/261,890.42 = 113,288.04/x
  3. Step 3: Cross multiply
    189,765.81x = 261,890.42 × 113,288.04
  4. Step 4: Simplify right side
    189,765.81x = 29,669,051,810.14
  5. Step 5: Solve for x
    x = 29,669,051,810.14/189,765.81
  6. Step 6: Final answer
    x = 156,345.61

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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.