Home / 137,949.47-190,373.66-77,516.49

Finding the Fourth Proportional to 137,949.47, 190,373.66 and 77,516.49

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Solution

The fourth proportional to 137,949.47, 190,373.66 and 77,516.49 is: 106,974.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,949.47 : 190,373.66 = 77,516.49 : x
  2. Step 2: Convert to fraction form
    137,949.47/190,373.66 = 77,516.49/x
  3. Step 3: Cross multiply
    137,949.47x = 190,373.66 × 77,516.49
  4. Step 4: Simplify right side
    137,949.47x = 14,757,097,524.07
  5. Step 5: Solve for x
    x = 14,757,097,524.07/137,949.47
  6. Step 6: Final answer
    x = 106,974.66

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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.