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Finding the Fourth Proportional to 139,410.36, 192,382.02 and 75,746.79

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Solution

The fourth proportional to 139,410.36, 192,382.02 and 75,746.79 is: 104,528.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,410.36 : 192,382.02 = 75,746.79 : x
  2. Step 2: Convert to fraction form
    139,410.36/192,382.02 = 75,746.79/x
  3. Step 3: Cross multiply
    139,410.36x = 192,382.02 × 75,746.79
  4. Step 4: Simplify right side
    139,410.36x = 14,572,320,468.72
  5. Step 5: Solve for x
    x = 14,572,320,468.72/139,410.36
  6. Step 6: Final answer
    x = 104,528.25

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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.