Home / 131,020.40-196,390.51-67,776.89

Finding the Fourth Proportional to 131,020.40, 196,390.51 and 67,776.89

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Solution

The fourth proportional to 131,020.40, 196,390.51 and 67,776.89 is: 101,592.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,020.40 : 196,390.51 = 67,776.89 : x
  2. Step 2: Convert to fraction form
    131,020.40/196,390.51 = 67,776.89/x
  3. Step 3: Cross multiply
    131,020.40x = 196,390.51 × 67,776.89
  4. Step 4: Simplify right side
    131,020.40x = 13,310,736,841.92
  5. Step 5: Solve for x
    x = 13,310,736,841.92/131,020.40
  6. Step 6: Final answer
    x = 101,592.86

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.