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Finding the Fourth Proportional to 93,415.66, 140,218.86 and 68,381.39

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Solution

The fourth proportional to 93,415.66, 140,218.86 and 68,381.39 is: 102,641.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,415.66 : 140,218.86 = 68,381.39 : x
  2. Step 2: Convert to fraction form
    93,415.66/140,218.86 = 68,381.39/x
  3. Step 3: Cross multiply
    93,415.66x = 140,218.86 × 68,381.39
  4. Step 4: Simplify right side
    93,415.66x = 9,588,360,551.02
  5. Step 5: Solve for x
    x = 9,588,360,551.02/93,415.66
  6. Step 6: Final answer
    x = 102,641.90

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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.