Home / 189,433.52-261,418.80-103,393.28

Finding the Fourth Proportional to 189,433.52, 261,418.80 and 103,393.28

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Solution

The fourth proportional to 189,433.52, 261,418.80 and 103,393.28 is: 142,683.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,433.52 : 261,418.80 = 103,393.28 : x
  2. Step 2: Convert to fraction form
    189,433.52/261,418.80 = 103,393.28/x
  3. Step 3: Cross multiply
    189,433.52x = 261,418.80 × 103,393.28
  4. Step 4: Simplify right side
    189,433.52x = 27,028,947,185.66
  5. Step 5: Solve for x
    x = 27,028,947,185.66/189,433.52
  6. Step 6: Final answer
    x = 142,683.02

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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.