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Finding the Fourth Proportional to 100,079.00, 138,107.86 and 54,756.47

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Solution

The fourth proportional to 100,079.00, 138,107.86 and 54,756.47 is: 75,563.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,079.00 : 138,107.86 = 54,756.47 : x
  2. Step 2: Convert to fraction form
    100,079.00/138,107.86 = 54,756.47/x
  3. Step 3: Cross multiply
    100,079.00x = 138,107.86 × 54,756.47
  4. Step 4: Simplify right side
    100,079.00x = 7,562,298,065.42
  5. Step 5: Solve for x
    x = 7,562,298,065.42/100,079.00
  6. Step 6: Final answer
    x = 75,563.28

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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.