Home / 231,021.47-346,531.98-86,954.20

Finding the Fourth Proportional to 231,021.47, 346,531.98 and 86,954.20

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Solution

The fourth proportional to 231,021.47, 346,531.98 and 86,954.20 is: 130,431.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,021.47 : 346,531.98 = 86,954.20 : x
  2. Step 2: Convert to fraction form
    231,021.47/346,531.98 = 86,954.20/x
  3. Step 3: Cross multiply
    231,021.47x = 346,531.98 × 86,954.20
  4. Step 4: Simplify right side
    231,021.47x = 30,132,410,555.06
  5. Step 5: Solve for x
    x = 30,132,410,555.06/231,021.47
  6. Step 6: Final answer
    x = 130,431.21

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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.