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Finding the Fourth Proportional to 143,287.01, 197,685.66 and 85,944.89

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Solution

The fourth proportional to 143,287.01, 197,685.66 and 85,944.89 is: 118,573.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,287.01 : 197,685.66 = 85,944.89 : x
  2. Step 2: Convert to fraction form
    143,287.01/197,685.66 = 85,944.89/x
  3. Step 3: Cross multiply
    143,287.01x = 197,685.66 × 85,944.89
  4. Step 4: Simplify right side
    143,287.01x = 16,990,072,303.28
  5. Step 5: Solve for x
    x = 16,990,072,303.28/143,287.01
  6. Step 6: Final answer
    x = 118,573.71

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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.