Home / 100,120.25-138,166.02-54,798.19

Finding the Fourth Proportional to 100,120.25, 138,166.02 and 54,798.19

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Solution

The fourth proportional to 100,120.25, 138,166.02 and 54,798.19 is: 75,621.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,120.25 : 138,166.02 = 54,798.19 : x
  2. Step 2: Convert to fraction form
    100,120.25/138,166.02 = 54,798.19/x
  3. Step 3: Cross multiply
    100,120.25x = 138,166.02 × 54,798.19
  4. Step 4: Simplify right side
    100,120.25x = 7,571,247,470.09
  5. Step 5: Solve for x
    x = 7,571,247,470.09/100,120.25
  6. Step 6: Final answer
    x = 75,621.54

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.