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Finding the Fourth Proportional to 157,563.34, 217,438.08 and 85,944.90

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Solution

The fourth proportional to 157,563.34, 217,438.08 and 85,944.90 is: 118,604.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,563.34 : 217,438.08 = 85,944.90 : x
  2. Step 2: Convert to fraction form
    157,563.34/217,438.08 = 85,944.90/x
  3. Step 3: Cross multiply
    157,563.34x = 217,438.08 × 85,944.90
  4. Step 4: Simplify right side
    157,563.34x = 18,687,694,041.79
  5. Step 5: Solve for x
    x = 18,687,694,041.79/157,563.34
  6. Step 6: Final answer
    x = 118,604.33

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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.