Home / 143,106.14-197,478.74-79,439.83

Finding the Fourth Proportional to 143,106.14, 197,478.74 and 79,439.83

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Solution

The fourth proportional to 143,106.14, 197,478.74 and 79,439.83 is: 109,622.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,106.14 : 197,478.74 = 79,439.83 : x
  2. Step 2: Convert to fraction form
    143,106.14/197,478.74 = 79,439.83/x
  3. Step 3: Cross multiply
    143,106.14x = 197,478.74 × 79,439.83
  4. Step 4: Simplify right side
    143,106.14x = 15,687,677,239.12
  5. Step 5: Solve for x
    x = 15,687,677,239.12/143,106.14
  6. Step 6: Final answer
    x = 109,622.67

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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.