Home / 154,493.36-213,084.78-103,563.53

Finding the Fourth Proportional to 154,493.36, 213,084.78 and 103,563.53

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Solution

The fourth proportional to 154,493.36, 213,084.78 and 103,563.53 is: 142,839.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,493.36 : 213,084.78 = 103,563.53 : x
  2. Step 2: Convert to fraction form
    154,493.36/213,084.78 = 103,563.53/x
  3. Step 3: Cross multiply
    154,493.36x = 213,084.78 × 103,563.53
  4. Step 4: Simplify right side
    154,493.36x = 22,067,812,006.07
  5. Step 5: Solve for x
    x = 22,067,812,006.07/154,493.36
  6. Step 6: Final answer
    x = 142,839.87

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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.