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Finding the Fourth Proportional to 121,960.66, 182,995.30 and 77,575.90

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Solution

The fourth proportional to 121,960.66, 182,995.30 and 77,575.90 is: 116,398.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,960.66 : 182,995.30 = 77,575.90 : x
  2. Step 2: Convert to fraction form
    121,960.66/182,995.30 = 77,575.90/x
  3. Step 3: Cross multiply
    121,960.66x = 182,995.30 × 77,575.90
  4. Step 4: Simplify right side
    121,960.66x = 14,196,025,093.27
  5. Step 5: Solve for x
    x = 14,196,025,093.27/121,960.66
  6. Step 6: Final answer
    x = 116,398.40

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.