Home / 106,320.85-159,481.62-72,939.74

Finding the Fourth Proportional to 106,320.85, 159,481.62 and 72,939.74

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Solution

The fourth proportional to 106,320.85, 159,481.62 and 72,939.74 is: 109,409.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    106,320.85 : 159,481.62 = 72,939.74 : x
  2. Step 2: Convert to fraction form
    106,320.85/159,481.62 = 72,939.74/x
  3. Step 3: Cross multiply
    106,320.85x = 159,481.62 × 72,939.74
  4. Step 4: Simplify right side
    106,320.85x = 11,632,547,100.17
  5. Step 5: Solve for x
    x = 11,632,547,100.17/106,320.85
  6. Step 6: Final answer
    x = 109,409.84

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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.