Home / 137,804.28-190,180.89-77,378.96

Finding the Fourth Proportional to 137,804.28, 190,180.89 and 77,378.96

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Solution

The fourth proportional to 137,804.28, 190,180.89 and 77,378.96 is: 106,789.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,804.28 : 190,180.89 = 77,378.96 : x
  2. Step 2: Convert to fraction form
    137,804.28/190,180.89 = 77,378.96/x
  3. Step 3: Cross multiply
    137,804.28x = 190,180.89 × 77,378.96
  4. Step 4: Simplify right side
    137,804.28x = 14,715,998,529.17
  5. Step 5: Solve for x
    x = 14,715,998,529.17/137,804.28
  6. Step 6: Final answer
    x = 106,789.13

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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.