Home / 142,864.65-197,158.01-79,198.65

Finding the Fourth Proportional to 142,864.65, 197,158.01 and 79,198.65

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Solution

The fourth proportional to 142,864.65, 197,158.01 and 79,198.65 is: 109,296.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,864.65 : 197,158.01 = 79,198.65 : x
  2. Step 2: Convert to fraction form
    142,864.65/197,158.01 = 79,198.65/x
  3. Step 3: Cross multiply
    142,864.65x = 197,158.01 × 79,198.65
  4. Step 4: Simplify right side
    142,864.65x = 15,614,648,228.69
  5. Step 5: Solve for x
    x = 15,614,648,228.69/142,864.65
  6. Step 6: Final answer
    x = 109,296.79

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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.