Home / 137,789.54-190,134.84-77,366.81

Finding the Fourth Proportional to 137,789.54, 190,134.84 and 77,366.81

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Solution

The fourth proportional to 137,789.54, 190,134.84 and 77,366.81 is: 106,757.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,789.54 : 190,134.84 = 77,366.81 : x
  2. Step 2: Convert to fraction form
    137,789.54/190,134.84 = 77,366.81/x
  3. Step 3: Cross multiply
    137,789.54x = 190,134.84 × 77,366.81
  4. Step 4: Simplify right side
    137,789.54x = 14,710,126,806.12
  5. Step 5: Solve for x
    x = 14,710,126,806.12/137,789.54
  6. Step 6: Final answer
    x = 106,757.94

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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.