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Finding the Fourth Proportional to 143,066.99, 197,453.02 and 85,708.76

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Solution

The fourth proportional to 143,066.99, 197,453.02 and 85,708.76 is: 118,290.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,066.99 : 197,453.02 = 85,708.76 : x
  2. Step 2: Convert to fraction form
    143,066.99/197,453.02 = 85,708.76/x
  3. Step 3: Cross multiply
    143,066.99x = 197,453.02 × 85,708.76
  4. Step 4: Simplify right side
    143,066.99x = 16,923,453,567.54
  5. Step 5: Solve for x
    x = 16,923,453,567.54/143,066.99
  6. Step 6: Final answer
    x = 118,290.41

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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.