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Finding the Fourth Proportional to 157,650.68, 217,538.78 and 89,676.30

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Solution

The fourth proportional to 157,650.68, 217,538.78 and 89,676.30 is: 123,742.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,650.68 : 217,538.78 = 89,676.30 : x
  2. Step 2: Convert to fraction form
    157,650.68/217,538.78 = 89,676.30/x
  3. Step 3: Cross multiply
    157,650.68x = 217,538.78 × 89,676.30
  4. Step 4: Simplify right side
    157,650.68x = 19,508,072,896.91
  5. Step 5: Solve for x
    x = 19,508,072,896.91/157,650.68
  6. Step 6: Final answer
    x = 123,742.40

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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.