Home / 259,962.60-389,981.04-80,063.28

Finding the Fourth Proportional to 259,962.60, 389,981.04 and 80,063.28

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Solution

The fourth proportional to 259,962.60, 389,981.04 and 80,063.28 is: 120,106.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,962.60 : 389,981.04 = 80,063.28 : x
  2. Step 2: Convert to fraction form
    259,962.60/389,981.04 = 80,063.28/x
  3. Step 3: Cross multiply
    259,962.60x = 389,981.04 × 80,063.28
  4. Step 4: Simplify right side
    259,962.60x = 31,223,161,200.21
  5. Step 5: Solve for x
    x = 31,223,161,200.21/259,962.60
  6. Step 6: Final answer
    x = 120,106.36

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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.