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Finding the Fourth Proportional to 138,226.80, 207,216.88 and 53,967.47

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Solution

The fourth proportional to 138,226.80, 207,216.88 and 53,967.47 is: 80,903.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,226.80 : 207,216.88 = 53,967.47 : x
  2. Step 2: Convert to fraction form
    138,226.80/207,216.88 = 53,967.47/x
  3. Step 3: Cross multiply
    138,226.80x = 207,216.88 × 53,967.47
  4. Step 4: Simplify right side
    138,226.80x = 11,182,969,887.46
  5. Step 5: Solve for x
    x = 11,182,969,887.46/138,226.80
  6. Step 6: Final answer
    x = 80,903.05

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1.5x scale

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.