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Finding the Fourth Proportional to 143,174.79, 197,585.73 and 85,795.20

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Solution

The fourth proportional to 143,174.79, 197,585.73 and 85,795.20 is: 118,400.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,174.79 : 197,585.73 = 85,795.20 : x
  2. Step 2: Convert to fraction form
    143,174.79/197,585.73 = 85,795.20/x
  3. Step 3: Cross multiply
    143,174.79x = 197,585.73 × 85,795.20
  4. Step 4: Simplify right side
    143,174.79x = 16,951,907,222.50
  5. Step 5: Solve for x
    x = 16,951,907,222.50/143,174.79
  6. Step 6: Final answer
    x = 118,400.08

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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.