Home / 320,740.95-481,113.45-84,081.54

Finding the Fourth Proportional to 320,740.95, 481,113.45 and 84,081.54

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Solution

The fourth proportional to 320,740.95, 481,113.45 and 84,081.54 is: 126,122.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,740.95 : 481,113.45 = 84,081.54 : x
  2. Step 2: Convert to fraction form
    320,740.95/481,113.45 = 84,081.54/x
  3. Step 3: Cross multiply
    320,740.95x = 481,113.45 × 84,081.54
  4. Step 4: Simplify right side
    320,740.95x = 40,452,759,790.71
  5. Step 5: Solve for x
    x = 40,452,759,790.71/320,740.95
  6. Step 6: Final answer
    x = 126,122.84

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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.