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Finding the Fourth Proportional to 139,228.62, 192,135.60 and 75,566.40

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Solution

The fourth proportional to 139,228.62, 192,135.60 and 75,566.40 is: 104,281.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,228.62 : 192,135.60 = 75,566.40 : x
  2. Step 2: Convert to fraction form
    139,228.62/192,135.60 = 75,566.40/x
  3. Step 3: Cross multiply
    139,228.62x = 192,135.60 × 75,566.40
  4. Step 4: Simplify right side
    139,228.62x = 14,518,994,883.33
  5. Step 5: Solve for x
    x = 14,518,994,883.33/139,228.62
  6. Step 6: Final answer
    x = 104,281.69

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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.