Home / 144,855.58-199,913-81,205.68

Finding the Fourth Proportional to 144,855.58, 199,913 and 81,205.68

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Solution

The fourth proportional to 144,855.58, 199,913 and 81,205.68 is: 112,070.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,855.58 : 199,913 = 81,205.68 : x
  2. Step 2: Convert to fraction form
    144,855.58/199,913 = 81,205.68/x
  3. Step 3: Cross multiply
    144,855.58x = 199,913 × 81,205.68
  4. Step 4: Simplify right side
    144,855.58x = 16,234,071,105.84
  5. Step 5: Solve for x
    x = 16,234,071,105.84/144,855.58
  6. Step 6: Final answer
    x = 112,070.73

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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.