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Finding the Fourth Proportional to 139,392.24, 192,362.21 and 75,730.02

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Solution

The fourth proportional to 139,392.24, 192,362.21 and 75,730.02 is: 104,507.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,392.24 : 192,362.21 = 75,730.02 : x
  2. Step 2: Convert to fraction form
    139,392.24/192,362.21 = 75,730.02/x
  3. Step 3: Cross multiply
    139,392.24x = 192,362.21 × 75,730.02
  4. Step 4: Simplify right side
    139,392.24x = 14,567,594,010.54
  5. Step 5: Solve for x
    x = 14,567,594,010.54/139,392.24
  6. Step 6: Final answer
    x = 104,507.93

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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.