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Finding the Fourth Proportional to 139,617.60, 192,670.12 and 75,953.92

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Solution

The fourth proportional to 139,617.60, 192,670.12 and 75,953.92 is: 104,815.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,617.60 : 192,670.12 = 75,953.92 : x
  2. Step 2: Convert to fraction form
    139,617.60/192,670.12 = 75,953.92/x
  3. Step 3: Cross multiply
    139,617.60x = 192,670.12 × 75,953.92
  4. Step 4: Simplify right side
    139,617.60x = 14,634,050,880.87
  5. Step 5: Solve for x
    x = 14,634,050,880.87/139,617.60
  6. Step 6: Final answer
    x = 104,815.23

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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.