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Finding the Fourth Proportional to 132,603, 182,992.14 and 72,987

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Solution

The fourth proportional to 132,603, 182,992.14 and 72,987 is: 100,722.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,603 : 182,992.14 = 72,987 : x
  2. Step 2: Convert to fraction form
    132,603/182,992.14 = 72,987/x
  3. Step 3: Cross multiply
    132,603x = 182,992.14 × 72,987
  4. Step 4: Simplify right side
    132,603x = 13,356,047,322.18
  5. Step 5: Solve for x
    x = 13,356,047,322.18/132,603
  6. Step 6: Final answer
    x = 100,722.06

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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.