Home / 137,859.76-190,198.02-90,141.04

Finding the Fourth Proportional to 137,859.76, 190,198.02 and 90,141.04

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Solution

The fourth proportional to 137,859.76, 190,198.02 and 90,141.04 is: 124,362.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,859.76 : 190,198.02 = 90,141.04 : x
  2. Step 2: Convert to fraction form
    137,859.76/190,198.02 = 90,141.04/x
  3. Step 3: Cross multiply
    137,859.76x = 190,198.02 × 90,141.04
  4. Step 4: Simplify right side
    137,859.76x = 17,144,647,328.74
  5. Step 5: Solve for x
    x = 17,144,647,328.74/137,859.76
  6. Step 6: Final answer
    x = 124,362.96

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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.