Home / 205,069.78-282,920.61-120,155.86

Finding the Fourth Proportional to 205,069.78, 282,920.61 and 120,155.86

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Solution

The fourth proportional to 205,069.78, 282,920.61 and 120,155.86 is: 165,770.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,069.78 : 282,920.61 = 120,155.86 : x
  2. Step 2: Convert to fraction form
    205,069.78/282,920.61 = 120,155.86/x
  3. Step 3: Cross multiply
    205,069.78x = 282,920.61 × 120,155.86
  4. Step 4: Simplify right side
    205,069.78x = 33,994,569,206.27
  5. Step 5: Solve for x
    x = 33,994,569,206.27/205,069.78
  6. Step 6: Final answer
    x = 165,770.74

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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.