Home / 139,208.40-192,106.62-75,546.72

Finding the Fourth Proportional to 139,208.40, 192,106.62 and 75,546.72

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Solution

The fourth proportional to 139,208.40, 192,106.62 and 75,546.72 is: 104,253.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,208.40 : 192,106.62 = 75,546.72 : x
  2. Step 2: Convert to fraction form
    139,208.40/192,106.62 = 75,546.72/x
  3. Step 3: Cross multiply
    139,208.40x = 192,106.62 × 75,546.72
  4. Step 4: Simplify right side
    139,208.40x = 14,513,025,031.29
  5. Step 5: Solve for x
    x = 14,513,025,031.29/139,208.40
  6. Step 6: Final answer
    x = 104,253.95

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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.