Home / 120,163,619.70-180,245,429.55-79,774,103.70

Finding the Fourth Proportional to 120,163,619.70, 180,245,429.55 and 79,774,103.70

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Solution

The fourth proportional to 120,163,619.70, 180,245,429.55 and 79,774,103.70 is: 119,661,155.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,163,619.70 : 180,245,429.55 = 79,774,103.70 : x
  2. Step 2: Convert to fraction form
    120,163,619.70/180,245,429.55 = 79,774,103.70/x
  3. Step 3: Cross multiply
    120,163,619.70x = 180,245,429.55 × 79,774,103.70
  4. Step 4: Simplify right side
    120,163,619.70x = 14,378,917,588,372,746
  5. Step 5: Solve for x
    x = 14,378,917,588,372,746/120,163,619.70
  6. Step 6: Final answer
    x = 119,661,155.55

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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.