Home / 97,811.10-146,716.65-76,815.90

Finding the Fourth Proportional to 97,811.10, 146,716.65 and 76,815.90

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Solution

The fourth proportional to 97,811.10, 146,716.65 and 76,815.90 is: 115,223.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    97,811.10 : 146,716.65 = 76,815.90 : x
  2. Step 2: Convert to fraction form
    97,811.10/146,716.65 = 76,815.90/x
  3. Step 3: Cross multiply
    97,811.10x = 146,716.65 × 76,815.90
  4. Step 4: Simplify right side
    97,811.10x = 11,270,171,514.74
  5. Step 5: Solve for x
    x = 11,270,171,514.74/97,811.10
  6. Step 6: Final answer
    x = 115,223.85

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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.