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Finding the Fourth Proportional to 114,408, 171,411.84 and 79,369.92

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Solution

The fourth proportional to 114,408, 171,411.84 and 79,369.92 is: 118,916.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    114,408 : 171,411.84 = 79,369.92 : x
  2. Step 2: Convert to fraction form
    114,408/171,411.84 = 79,369.92/x
  3. Step 3: Cross multiply
    114,408x = 171,411.84 × 79,369.92
  4. Step 4: Simplify right side
    114,408x = 13,604,944,027.85
  5. Step 5: Solve for x
    x = 13,604,944,027.85/114,408
  6. Step 6: Final answer
    x = 118,916.02

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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.