Home / 139,579.05-192,616.71-77,487.39

Finding the Fourth Proportional to 139,579.05, 192,616.71 and 77,487.39

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Solution

The fourth proportional to 139,579.05, 192,616.71 and 77,487.39 is: 106,931.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,579.05 : 192,616.71 = 77,487.39 : x
  2. Step 2: Convert to fraction form
    139,579.05/192,616.71 = 77,487.39/x
  3. Step 3: Cross multiply
    139,579.05x = 192,616.71 × 77,487.39
  4. Step 4: Simplify right side
    139,579.05x = 14,925,366,128.29
  5. Step 5: Solve for x
    x = 14,925,366,128.29/139,579.05
  6. Step 6: Final answer
    x = 106,931.28

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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.