Home / 213,815.12-295,069.68-138,494.72

Finding the Fourth Proportional to 213,815.12, 295,069.68 and 138,494.72

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Solution

The fourth proportional to 213,815.12, 295,069.68 and 138,494.72 is: 191,125.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,815.12 : 295,069.68 = 138,494.72 : x
  2. Step 2: Convert to fraction form
    213,815.12/295,069.68 = 138,494.72/x
  3. Step 3: Cross multiply
    213,815.12x = 295,069.68 × 138,494.72
  4. Step 4: Simplify right side
    213,815.12x = 40,865,592,712.09
  5. Step 5: Solve for x
    x = 40,865,592,712.09/213,815.12
  6. Step 6: Final answer
    x = 191,125.83

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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.