Home / 112,022.20-168,033.30-78,779.80

Finding the Fourth Proportional to 112,022.20, 168,033.30 and 78,779.80

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Solution

The fourth proportional to 112,022.20, 168,033.30 and 78,779.80 is: 118,169.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,022.20 : 168,033.30 = 78,779.80 : x
  2. Step 2: Convert to fraction form
    112,022.20/168,033.30 = 78,779.80/x
  3. Step 3: Cross multiply
    112,022.20x = 168,033.30 × 78,779.80
  4. Step 4: Simplify right side
    112,022.20x = 13,237,629,767.34
  5. Step 5: Solve for x
    x = 13,237,629,767.34/112,022.20
  6. Step 6: Final answer
    x = 118,169.70

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1.5x scale

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.