Home / 143,015.22-197,339.09-85,641.10

Finding the Fourth Proportional to 143,015.22, 197,339.09 and 85,641.10

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Solution

The fourth proportional to 143,015.22, 197,339.09 and 85,641.10 is: 118,171.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,015.22 : 197,339.09 = 85,641.10 : x
  2. Step 2: Convert to fraction form
    143,015.22/197,339.09 = 85,641.10/x
  3. Step 3: Cross multiply
    143,015.22x = 197,339.09 × 85,641.10
  4. Step 4: Simplify right side
    143,015.22x = 16,900,335,819.05
  5. Step 5: Solve for x
    x = 16,900,335,819.05/143,015.22
  6. Step 6: Final answer
    x = 118,171.59

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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.