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Finding the Fourth Proportional to 154,818, 213,694.44 and 101,111.28

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Solution

The fourth proportional to 154,818, 213,694.44 and 101,111.28 is: 139,563.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,818 : 213,694.44 = 101,111.28 : x
  2. Step 2: Convert to fraction form
    154,818/213,694.44 = 101,111.28/x
  3. Step 3: Cross multiply
    154,818x = 213,694.44 × 101,111.28
  4. Step 4: Simplify right side
    154,818x = 21,606,918,357.28
  5. Step 5: Solve for x
    x = 21,606,918,357.28/154,818
  6. Step 6: Final answer
    x = 139,563.35

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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.