Home / 139,829.97-192,965.36-76,167.77

Finding the Fourth Proportional to 139,829.97, 192,965.36 and 76,167.77

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Solution

The fourth proportional to 139,829.97, 192,965.36 and 76,167.77 is: 105,111.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,829.97 : 192,965.36 = 76,167.77 : x
  2. Step 2: Convert to fraction form
    139,829.97/192,965.36 = 76,167.77/x
  3. Step 3: Cross multiply
    139,829.97x = 192,965.36 × 76,167.77
  4. Step 4: Simplify right side
    139,829.97x = 14,697,739,812.78
  5. Step 5: Solve for x
    x = 14,697,739,812.78/139,829.97
  6. Step 6: Final answer
    x = 105,111.51

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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.