Home / 159,186.33-219,675.90-87,564.78

Finding the Fourth Proportional to 159,186.33, 219,675.90 and 87,564.78

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Solution

The fourth proportional to 159,186.33, 219,675.90 and 87,564.78 is: 120,838.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,186.33 : 219,675.90 = 87,564.78 : x
  2. Step 2: Convert to fraction form
    159,186.33/219,675.90 = 87,564.78/x
  3. Step 3: Cross multiply
    159,186.33x = 219,675.90 × 87,564.78
  4. Step 4: Simplify right side
    159,186.33x = 19,235,871,854.80
  5. Step 5: Solve for x
    x = 19,235,871,854.80/159,186.33
  6. Step 6: Final answer
    x = 120,838.72

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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.