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Finding the Fourth Proportional to 143,887.17, 215,646.05 and 68,894.94

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Solution

The fourth proportional to 143,887.17, 215,646.05 and 68,894.94 is: 103,253.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,887.17 : 215,646.05 = 68,894.94 : x
  2. Step 2: Convert to fraction form
    143,887.17/215,646.05 = 68,894.94/x
  3. Step 3: Cross multiply
    143,887.17x = 215,646.05 × 68,894.94
  4. Step 4: Simplify right side
    143,887.17x = 14,856,921,056.35
  5. Step 5: Solve for x
    x = 14,856,921,056.35/143,887.17
  6. Step 6: Final answer
    x = 103,253.97

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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.