Home / 139,400.74-192,373.94-75,738.52

Finding the Fourth Proportional to 139,400.74, 192,373.94 and 75,738.52

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Solution

The fourth proportional to 139,400.74, 192,373.94 and 75,738.52 is: 104,519.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,400.74 : 192,373.94 = 75,738.52 : x
  2. Step 2: Convert to fraction form
    139,400.74/192,373.94 = 75,738.52/x
  3. Step 3: Cross multiply
    139,400.74x = 192,373.94 × 75,738.52
  4. Step 4: Simplify right side
    139,400.74x = 14,570,117,502.17
  5. Step 5: Solve for x
    x = 14,570,117,502.17/139,400.74
  6. Step 6: Final answer
    x = 104,519.66

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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.