Home / 143,106.91-197,477.64-79,439.68

Finding the Fourth Proportional to 143,106.91, 197,477.64 and 79,439.68

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Solution

The fourth proportional to 143,106.91, 197,477.64 and 79,439.68 is: 109,621.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,106.91 : 197,477.64 = 79,439.68 : x
  2. Step 2: Convert to fraction form
    143,106.91/197,477.64 = 79,439.68/x
  3. Step 3: Cross multiply
    143,106.91x = 197,477.64 × 79,439.68
  4. Step 4: Simplify right side
    143,106.91x = 15,687,560,528.76
  5. Step 5: Solve for x
    x = 15,687,560,528.76/143,106.91
  6. Step 6: Final answer
    x = 109,621.27

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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.