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Finding the Fourth Proportional to 157,354.67, 217,146.69 and 85,735.21

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Solution

The fourth proportional to 157,354.67, 217,146.69 and 85,735.21 is: 118,313.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,354.67 : 217,146.69 = 85,735.21 : x
  2. Step 2: Convert to fraction form
    157,354.67/217,146.69 = 85,735.21/x
  3. Step 3: Cross multiply
    157,354.67x = 217,146.69 × 85,735.21
  4. Step 4: Simplify right side
    157,354.67x = 18,617,117,067.95
  5. Step 5: Solve for x
    x = 18,617,117,067.95/157,354.67
  6. Step 6: Final answer
    x = 118,313.09

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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.