Home / 131,308.29-196,646.72-74,977.70

Finding the Fourth Proportional to 131,308.29, 196,646.72 and 74,977.70

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Solution

The fourth proportional to 131,308.29, 196,646.72 and 74,977.70 is: 112,286.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,308.29 : 196,646.72 = 74,977.70 : x
  2. Step 2: Convert to fraction form
    131,308.29/196,646.72 = 74,977.70/x
  3. Step 3: Cross multiply
    131,308.29x = 196,646.72 × 74,977.70
  4. Step 4: Simplify right side
    131,308.29x = 14,744,117,794.91
  5. Step 5: Solve for x
    x = 14,744,117,794.91/131,308.29
  6. Step 6: Final answer
    x = 112,286.27

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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.