Home / 109,516.25-164,274.38-42,987.71

Finding the Fourth Proportional to 109,516.25, 164,274.38 and 42,987.71

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Solution

The fourth proportional to 109,516.25, 164,274.38 and 42,987.71 is: 64,481.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,516.25 : 164,274.38 = 42,987.71 : x
  2. Step 2: Convert to fraction form
    109,516.25/164,274.38 = 42,987.71/x
  3. Step 3: Cross multiply
    109,516.25x = 164,274.38 × 42,987.71
  4. Step 4: Simplify right side
    109,516.25x = 7,061,779,764.82
  5. Step 5: Solve for x
    x = 7,061,779,764.82/109,516.25
  6. Step 6: Final answer
    x = 64,481.57

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.