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Finding the Fourth Proportional to 125,674.88, 173,431.35 and 71,977.68

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Solution

The fourth proportional to 125,674.88, 173,431.35 and 71,977.68 is: 99,329.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,674.88 : 173,431.35 = 71,977.68 : x
  2. Step 2: Convert to fraction form
    125,674.88/173,431.35 = 71,977.68/x
  3. Step 3: Cross multiply
    125,674.88x = 173,431.35 × 71,977.68
  4. Step 4: Simplify right side
    125,674.88x = 12,483,186,212.27
  5. Step 5: Solve for x
    x = 12,483,186,212.27/125,674.88
  6. Step 6: Final answer
    x = 99,329.21

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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.