Home / 142,849.20-197,118.64-79,181.58

Finding the Fourth Proportional to 142,849.20, 197,118.64 and 79,181.58

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Solution

The fourth proportional to 142,849.20, 197,118.64 and 79,181.58 is: 109,263.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,849.20 : 197,118.64 = 79,181.58 : x
  2. Step 2: Convert to fraction form
    142,849.20/197,118.64 = 79,181.58/x
  3. Step 3: Cross multiply
    142,849.20x = 197,118.64 × 79,181.58
  4. Step 4: Simplify right side
    142,849.20x = 15,608,165,362.65
  5. Step 5: Solve for x
    x = 15,608,165,362.65/142,849.20
  6. Step 6: Final answer
    x = 109,263.23

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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.