Home / 259,747.60-389,621.40-109,938.10

Finding the Fourth Proportional to 259,747.60, 389,621.40 and 109,938.10

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Solution

The fourth proportional to 259,747.60, 389,621.40 and 109,938.10 is: 164,907.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,747.60 : 389,621.40 = 109,938.10 : x
  2. Step 2: Convert to fraction form
    259,747.60/389,621.40 = 109,938.10/x
  3. Step 3: Cross multiply
    259,747.60x = 389,621.40 × 109,938.10
  4. Step 4: Simplify right side
    259,747.60x = 42,834,236,435.34
  5. Step 5: Solve for x
    x = 42,834,236,435.34/259,747.60
  6. Step 6: Final answer
    x = 164,907.15

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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.