Home / 231,206.47-346,815.86-81,412.69

Finding the Fourth Proportional to 231,206.47, 346,815.86 and 81,412.69

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Solution

The fourth proportional to 231,206.47, 346,815.86 and 81,412.69 is: 122,121.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,206.47 : 346,815.86 = 81,412.69 : x
  2. Step 2: Convert to fraction form
    231,206.47/346,815.86 = 81,412.69/x
  3. Step 3: Cross multiply
    231,206.47x = 346,815.86 × 81,412.69
  4. Step 4: Simplify right side
    231,206.47x = 28,235,212,097.26
  5. Step 5: Solve for x
    x = 28,235,212,097.26/231,206.47
  6. Step 6: Final answer
    x = 122,121.20

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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.