Home / 143,078.22-197,426.03-85,704.10

Finding the Fourth Proportional to 143,078.22, 197,426.03 and 85,704.10

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Solution

The fourth proportional to 143,078.22, 197,426.03 and 85,704.10 is: 118,258.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,078.22 : 197,426.03 = 85,704.10 : x
  2. Step 2: Convert to fraction form
    143,078.22/197,426.03 = 85,704.10/x
  3. Step 3: Cross multiply
    143,078.22x = 197,426.03 × 85,704.10
  4. Step 4: Simplify right side
    143,078.22x = 16,920,219,295.64
  5. Step 5: Solve for x
    x = 16,920,219,295.64/143,078.22
  6. Step 6: Final answer
    x = 118,258.53

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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.