Home / 154,938.95-213,837.20-86,959.97

Finding the Fourth Proportional to 154,938.95, 213,837.20 and 86,959.97

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Solution

The fourth proportional to 154,938.95, 213,837.20 and 86,959.97 is: 120,016.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,938.95 : 213,837.20 = 86,959.97 : x
  2. Step 2: Convert to fraction form
    154,938.95/213,837.20 = 86,959.97/x
  3. Step 3: Cross multiply
    154,938.95x = 213,837.20 × 86,959.97
  4. Step 4: Simplify right side
    154,938.95x = 18,595,276,496.88
  5. Step 5: Solve for x
    x = 18,595,276,496.88/154,938.95
  6. Step 6: Final answer
    x = 120,016.80

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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.