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Finding the Fourth Proportional to 104,142.05, 143,715.79 and 56,395.79

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Solution

The fourth proportional to 104,142.05, 143,715.79 and 56,395.79 is: 77,826.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,142.05 : 143,715.79 = 56,395.79 : x
  2. Step 2: Convert to fraction form
    104,142.05/143,715.79 = 56,395.79/x
  3. Step 3: Cross multiply
    104,142.05x = 143,715.79 × 56,395.79
  4. Step 4: Simplify right side
    104,142.05x = 8,104,965,512.52
  5. Step 5: Solve for x
    x = 8,104,965,512.52/104,142.05
  6. Step 6: Final answer
    x = 77,826.06

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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.