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Finding the Fourth Proportional to 139,220.68, 192,122.58 and 75,556.84

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Solution

The fourth proportional to 139,220.68, 192,122.58 and 75,556.84 is: 104,267.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,220.68 : 192,122.58 = 75,556.84 : x
  2. Step 2: Convert to fraction form
    139,220.68/192,122.58 = 75,556.84/x
  3. Step 3: Cross multiply
    139,220.68x = 192,122.58 × 75,556.84
  4. Step 4: Simplify right side
    139,220.68x = 14,516,175,037.45
  5. Step 5: Solve for x
    x = 14,516,175,037.45/139,220.68
  6. Step 6: Final answer
    x = 104,267.38

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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.