Home / 100,080.24-138,112.45-54,762.18

Finding the Fourth Proportional to 100,080.24, 138,112.45 and 54,762.18

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Solution

The fourth proportional to 100,080.24, 138,112.45 and 54,762.18 is: 75,572.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,080.24 : 138,112.45 = 54,762.18 : x
  2. Step 2: Convert to fraction form
    100,080.24/138,112.45 = 54,762.18/x
  3. Step 3: Cross multiply
    100,080.24x = 138,112.45 × 54,762.18
  4. Step 4: Simplify right side
    100,080.24x = 7,563,338,847.14
  5. Step 5: Solve for x
    x = 7,563,338,847.14/100,080.24
  6. Step 6: Final answer
    x = 75,572.75

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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.