Home / 143,575.46-198,140.76-79,917.38

Finding the Fourth Proportional to 143,575.46, 198,140.76 and 79,917.38

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Solution

The fourth proportional to 143,575.46, 198,140.76 and 79,917.38 is: 110,289.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,575.46 : 198,140.76 = 79,917.38 : x
  2. Step 2: Convert to fraction form
    143,575.46/198,140.76 = 79,917.38/x
  3. Step 3: Cross multiply
    143,575.46x = 198,140.76 × 79,917.38
  4. Step 4: Simplify right side
    143,575.46x = 15,834,889,419.71
  5. Step 5: Solve for x
    x = 15,834,889,419.71/143,575.46
  6. Step 6: Final answer
    x = 110,289.67

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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.