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Finding the Fourth Proportional to 137,550.52, 189,820.74 and 89,775.64

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Solution

The fourth proportional to 137,550.52, 189,820.74 and 89,775.64 is: 123,891.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,550.52 : 189,820.74 = 89,775.64 : x
  2. Step 2: Convert to fraction form
    137,550.52/189,820.74 = 89,775.64/x
  3. Step 3: Cross multiply
    137,550.52x = 189,820.74 × 89,775.64
  4. Step 4: Simplify right side
    137,550.52x = 17,041,278,418.77
  5. Step 5: Solve for x
    x = 17,041,278,418.77/137,550.52
  6. Step 6: Final answer
    x = 123,891.05

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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.