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Finding the Fourth Proportional to 139,158.29, 192,038.81 and 75,496.08

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Solution

The fourth proportional to 139,158.29, 192,038.81 and 75,496.08 is: 104,184.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,158.29 : 192,038.81 = 75,496.08 : x
  2. Step 2: Convert to fraction form
    139,158.29/192,038.81 = 75,496.08/x
  3. Step 3: Cross multiply
    139,158.29x = 192,038.81 × 75,496.08
  4. Step 4: Simplify right side
    139,158.29x = 14,498,177,362.86
  5. Step 5: Solve for x
    x = 14,498,177,362.86/139,158.29
  6. Step 6: Final answer
    x = 104,184.79

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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.