Home / 268,569.10-402,853.65-81,556.30

Finding the Fourth Proportional to 268,569.10, 402,853.65 and 81,556.30

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Solution

The fourth proportional to 268,569.10, 402,853.65 and 81,556.30 is: 122,334.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,569.10 : 402,853.65 = 81,556.30 : x
  2. Step 2: Convert to fraction form
    268,569.10/402,853.65 = 81,556.30/x
  3. Step 3: Cross multiply
    268,569.10x = 402,853.65 × 81,556.30
  4. Step 4: Simplify right side
    268,569.10x = 32,855,253,135.50
  5. Step 5: Solve for x
    x = 32,855,253,135.50/268,569.10
  6. Step 6: Final answer
    x = 122,334.45

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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.