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Finding the Fourth Proportional to 125,735.84, 173,465.96 and 71,991.92

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Solution

The fourth proportional to 125,735.84, 173,465.96 and 71,991.92 is: 99,320.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,735.84 : 173,465.96 = 71,991.92 : x
  2. Step 2: Convert to fraction form
    125,735.84/173,465.96 = 71,991.92/x
  3. Step 3: Cross multiply
    125,735.84x = 173,465.96 × 71,991.92
  4. Step 4: Simplify right side
    125,735.84x = 12,488,147,515.04
  5. Step 5: Solve for x
    x = 12,488,147,515.04/125,735.84
  6. Step 6: Final answer
    x = 99,320.51

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1.5x scale

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.