Home / 259,533.10-389,061.80-90,961.54

Finding the Fourth Proportional to 259,533.10, 389,061.80 and 90,961.54

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Solution

The fourth proportional to 259,533.10, 389,061.80 and 90,961.54 is: 136,358.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,533.10 : 389,061.80 = 90,961.54 : x
  2. Step 2: Convert to fraction form
    259,533.10/389,061.80 = 90,961.54/x
  3. Step 3: Cross multiply
    259,533.10x = 389,061.80 × 90,961.54
  4. Step 4: Simplify right side
    259,533.10x = 35,389,660,483.17
  5. Step 5: Solve for x
    x = 35,389,660,483.17/259,533.10
  6. Step 6: Final answer
    x = 136,358.95

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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.