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Finding the Fourth Proportional to 157,589.56, 217,473.50 and 85,969.42

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Solution

The fourth proportional to 157,589.56, 217,473.50 and 85,969.42 is: 118,637.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,589.56 : 217,473.50 = 85,969.42 : x
  2. Step 2: Convert to fraction form
    157,589.56/217,473.50 = 85,969.42/x
  3. Step 3: Cross multiply
    157,589.56x = 217,473.50 × 85,969.42
  4. Step 4: Simplify right side
    157,589.56x = 18,696,070,660.37
  5. Step 5: Solve for x
    x = 18,696,070,660.37/157,589.56
  6. Step 6: Final answer
    x = 118,637.75

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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.