Home / 137,790.54-190,136.22-77,367.81

Finding the Fourth Proportional to 137,790.54, 190,136.22 and 77,367.81

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Solution

The fourth proportional to 137,790.54, 190,136.22 and 77,367.81 is: 106,759.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,790.54 : 190,136.22 = 77,367.81 : x
  2. Step 2: Convert to fraction form
    137,790.54/190,136.22 = 77,367.81/x
  3. Step 3: Cross multiply
    137,790.54x = 190,136.22 × 77,367.81
  4. Step 4: Simplify right side
    137,790.54x = 14,710,422,943.08
  5. Step 5: Solve for x
    x = 14,710,422,943.08/137,790.54
  6. Step 6: Final answer
    x = 106,759.31

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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.