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Finding the Fourth Proportional to 121,363.88, 182,008.86 and 42,463.40

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Solution

The fourth proportional to 121,363.88, 182,008.86 and 42,463.40 is: 63,682.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,363.88 : 182,008.86 = 42,463.40 : x
  2. Step 2: Convert to fraction form
    121,363.88/182,008.86 = 42,463.40/x
  3. Step 3: Cross multiply
    121,363.88x = 182,008.86 × 42,463.40
  4. Step 4: Simplify right side
    121,363.88x = 7,728,715,025.72
  5. Step 5: Solve for x
    x = 7,728,715,025.72/121,363.88
  6. Step 6: Final answer
    x = 63,682.17

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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.