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Finding the Fourth Proportional to 139,477.16, 192,474.42 and 75,813.32

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Solution

The fourth proportional to 139,477.16, 192,474.42 and 75,813.32 is: 104,620.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,477.16 : 192,474.42 = 75,813.32 : x
  2. Step 2: Convert to fraction form
    139,477.16/192,474.42 = 75,813.32/x
  3. Step 3: Cross multiply
    139,477.16x = 192,474.42 × 75,813.32
  4. Step 4: Simplify right side
    139,477.16x = 14,592,124,795.27
  5. Step 5: Solve for x
    x = 14,592,124,795.27/139,477.16
  6. Step 6: Final answer
    x = 104,620.17

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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.