Home / 109,917.81-164,761.28-69,967.39

Finding the Fourth Proportional to 109,917.81, 164,761.28 and 69,967.39

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Solution

The fourth proportional to 109,917.81, 164,761.28 and 69,967.39 is: 104,877.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,917.81 : 164,761.28 = 69,967.39 : x
  2. Step 2: Convert to fraction form
    109,917.81/164,761.28 = 69,967.39/x
  3. Step 3: Cross multiply
    109,917.81x = 164,761.28 × 69,967.39
  4. Step 4: Simplify right side
    109,917.81x = 11,527,917,246.72
  5. Step 5: Solve for x
    x = 11,527,917,246.72/109,917.81
  6. Step 6: Final answer
    x = 104,877.61

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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.