Home / 154,656.82-213,422.86-90,121.95

Finding the Fourth Proportional to 154,656.82, 213,422.86 and 90,121.95

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Solution

The fourth proportional to 154,656.82, 213,422.86 and 90,121.95 is: 124,366.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,656.82 : 213,422.86 = 90,121.95 : x
  2. Step 2: Convert to fraction form
    154,656.82/213,422.86 = 90,121.95/x
  3. Step 3: Cross multiply
    154,656.82x = 213,422.86 × 90,121.95
  4. Step 4: Simplify right side
    154,656.82x = 19,234,084,317.78
  5. Step 5: Solve for x
    x = 19,234,084,317.78/154,656.82
  6. Step 6: Final answer
    x = 124,366.22

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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.