Home / 139,746.49-192,853.64-76,087.78

Finding the Fourth Proportional to 139,746.49, 192,853.64 and 76,087.78

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Solution

The fourth proportional to 139,746.49, 192,853.64 and 76,087.78 is: 105,003.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,746.49 : 192,853.64 = 76,087.78 : x
  2. Step 2: Convert to fraction form
    139,746.49/192,853.64 = 76,087.78/x
  3. Step 3: Cross multiply
    139,746.49x = 192,853.64 × 76,087.78
  4. Step 4: Simplify right side
    139,746.49x = 14,673,805,332.52
  5. Step 5: Solve for x
    x = 14,673,805,332.52/139,746.49
  6. Step 6: Final answer
    x = 105,003.03

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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.