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Finding the Fourth Proportional to 157,396.79, 217,201.25 and 85,775.27

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Solution

The fourth proportional to 157,396.79, 217,201.25 and 85,775.27 is: 118,366.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,396.79 : 217,201.25 = 85,775.27 : x
  2. Step 2: Convert to fraction form
    157,396.79/217,201.25 = 85,775.27/x
  3. Step 3: Cross multiply
    157,396.79x = 217,201.25 × 85,775.27
  4. Step 4: Simplify right side
    157,396.79x = 18,630,495,863.09
  5. Step 5: Solve for x
    x = 18,630,495,863.09/157,396.79
  6. Step 6: Final answer
    x = 118,366.43

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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.