Home / 136,998.28-189,050.04-76,556.89

Finding the Fourth Proportional to 136,998.28, 189,050.04 and 76,556.89

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Solution

The fourth proportional to 136,998.28, 189,050.04 and 76,556.89 is: 105,644.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,998.28 : 189,050.04 = 76,556.89 : x
  2. Step 2: Convert to fraction form
    136,998.28/189,050.04 = 76,556.89/x
  3. Step 3: Cross multiply
    136,998.28x = 189,050.04 × 76,556.89
  4. Step 4: Simplify right side
    136,998.28x = 14,473,083,116.78
  5. Step 5: Solve for x
    x = 14,473,083,116.78/136,998.28
  6. Step 6: Final answer
    x = 105,644.27

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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.