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Finding the Fourth Proportional to 115,207, 158,985.66 and 62,215

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Solution

The fourth proportional to 115,207, 158,985.66 and 62,215 is: 85,856.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,207 : 158,985.66 = 62,215 : x
  2. Step 2: Convert to fraction form
    115,207/158,985.66 = 62,215/x
  3. Step 3: Cross multiply
    115,207x = 158,985.66 × 62,215
  4. Step 4: Simplify right side
    115,207x = 9,891,292,836.90
  5. Step 5: Solve for x
    x = 9,891,292,836.90/115,207
  6. Step 6: Final answer
    x = 85,856.70

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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.