Home / 112,780.22-155,566.32-72,546.44

Finding the Fourth Proportional to 112,780.22, 155,566.32 and 72,546.44

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Solution

The fourth proportional to 112,780.22, 155,566.32 and 72,546.44 is: 100,068.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,780.22 : 155,566.32 = 72,546.44 : x
  2. Step 2: Convert to fraction form
    112,780.22/155,566.32 = 72,546.44/x
  3. Step 3: Cross multiply
    112,780.22x = 155,566.32 × 72,546.44
  4. Step 4: Simplify right side
    112,780.22x = 11,285,782,699.90
  5. Step 5: Solve for x
    x = 11,285,782,699.90/112,780.22
  6. Step 6: Final answer
    x = 100,068.81

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1.5x scale

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.