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Finding the Fourth Proportional to 143,341.65, 197,794.31 and 78,800.24

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Solution

The fourth proportional to 143,341.65, 197,794.31 and 78,800.24 is: 108,734.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,341.65 : 197,794.31 = 78,800.24 : x
  2. Step 2: Convert to fraction form
    143,341.65/197,794.31 = 78,800.24/x
  3. Step 3: Cross multiply
    143,341.65x = 197,794.31 × 78,800.24
  4. Step 4: Simplify right side
    143,341.65x = 15,586,239,199.12
  5. Step 5: Solve for x
    x = 15,586,239,199.12/143,341.65
  6. Step 6: Final answer
    x = 108,734.89

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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.