Home / 136,438.79-188,289.27-85,446.75

Finding the Fourth Proportional to 136,438.79, 188,289.27 and 85,446.75

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Solution

The fourth proportional to 136,438.79, 188,289.27 and 85,446.75 is: 117,918.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,438.79 : 188,289.27 = 85,446.75 : x
  2. Step 2: Convert to fraction form
    136,438.79/188,289.27 = 85,446.75/x
  3. Step 3: Cross multiply
    136,438.79x = 188,289.27 × 85,446.75
  4. Step 4: Simplify right side
    136,438.79x = 16,088,706,181.37
  5. Step 5: Solve for x
    x = 16,088,706,181.37/136,438.79
  6. Step 6: Final answer
    x = 117,918.86

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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.