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Finding the Fourth Proportional to 139,465.80, 192,454.65 and 75,803.04

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Solution

The fourth proportional to 139,465.80, 192,454.65 and 75,803.04 is: 104,603.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,465.80 : 192,454.65 = 75,803.04 : x
  2. Step 2: Convert to fraction form
    139,465.80/192,454.65 = 75,803.04/x
  3. Step 3: Cross multiply
    139,465.80x = 192,454.65 × 75,803.04
  4. Step 4: Simplify right side
    139,465.80x = 14,588,647,532.14
  5. Step 5: Solve for x
    x = 14,588,647,532.14/139,465.80
  6. Step 6: Final answer
    x = 104,603.76

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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.