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Finding the Fourth Proportional to 139,323.57, 192,325.40 and 94,062.87

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Solution

The fourth proportional to 139,323.57, 192,325.40 and 94,062.87 is: 129,846.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,323.57 : 192,325.40 = 94,062.87 : x
  2. Step 2: Convert to fraction form
    139,323.57/192,325.40 = 94,062.87/x
  3. Step 3: Cross multiply
    139,323.57x = 192,325.40 × 94,062.87
  4. Step 4: Simplify right side
    139,323.57x = 18,090,678,627.58
  5. Step 5: Solve for x
    x = 18,090,678,627.58/139,323.57
  6. Step 6: Final answer
    x = 129,846.50

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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.