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Finding the Fourth Proportional to 157,859.34, 217,860.90 and 86,250.12

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Solution

The fourth proportional to 157,859.34, 217,860.90 and 86,250.12 is: 119,033.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,859.34 : 217,860.90 = 86,250.12 : x
  2. Step 2: Convert to fraction form
    157,859.34/217,860.90 = 86,250.12/x
  3. Step 3: Cross multiply
    157,859.34x = 217,860.90 × 86,250.12
  4. Step 4: Simplify right side
    157,859.34x = 18,790,528,768.31
  5. Step 5: Solve for x
    x = 18,790,528,768.31/157,859.34
  6. Step 6: Final answer
    x = 119,033.37

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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.