Home / 154,553.09-213,356.31-103,599.11

Finding the Fourth Proportional to 154,553.09, 213,356.31 and 103,599.11

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Solution

The fourth proportional to 154,553.09, 213,356.31 and 103,599.11 is: 143,015.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,553.09 : 213,356.31 = 103,599.11 : x
  2. Step 2: Convert to fraction form
    154,553.09/213,356.31 = 103,599.11/x
  3. Step 3: Cross multiply
    154,553.09x = 213,356.31 × 103,599.11
  4. Step 4: Simplify right side
    154,553.09x = 22,103,523,828.88
  5. Step 5: Solve for x
    x = 22,103,523,828.88/154,553.09
  6. Step 6: Final answer
    x = 143,015.74

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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.