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Finding the Fourth Proportional to 134,649.86, 185,808.33 and 74,217.17

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Solution

The fourth proportional to 134,649.86, 185,808.33 and 74,217.17 is: 102,415.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,649.86 : 185,808.33 = 74,217.17 : x
  2. Step 2: Convert to fraction form
    134,649.86/185,808.33 = 74,217.17/x
  3. Step 3: Cross multiply
    134,649.86x = 185,808.33 × 74,217.17
  4. Step 4: Simplify right side
    134,649.86x = 13,790,167,485.98
  5. Step 5: Solve for x
    x = 13,790,167,485.98/134,649.86
  6. Step 6: Final answer
    x = 102,415.02

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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.