Home / 157,621.88-217,517.08-89,638.84

Finding the Fourth Proportional to 157,621.88, 217,517.08 and 89,638.84

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Solution

The fourth proportional to 157,621.88, 217,517.08 and 89,638.84 is: 123,700.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,621.88 : 217,517.08 = 89,638.84 : x
  2. Step 2: Convert to fraction form
    157,621.88/217,517.08 = 89,638.84/x
  3. Step 3: Cross multiply
    157,621.88x = 217,517.08 × 89,638.84
  4. Step 4: Simplify right side
    157,621.88x = 19,497,978,731.39
  5. Step 5: Solve for x
    x = 19,497,978,731.39/157,621.88
  6. Step 6: Final answer
    x = 123,700.97

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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.