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Finding the Fourth Proportional to 115,209, 158,988.42 and 62,217

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Solution

The fourth proportional to 115,209, 158,988.42 and 62,217 is: 85,859.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,209 : 158,988.42 = 62,217 : x
  2. Step 2: Convert to fraction form
    115,209/158,988.42 = 62,217/x
  3. Step 3: Cross multiply
    115,209x = 158,988.42 × 62,217
  4. Step 4: Simplify right side
    115,209x = 9,891,782,527.14
  5. Step 5: Solve for x
    x = 9,891,782,527.14/115,209
  6. Step 6: Final answer
    x = 85,859.46

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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.