Home / 143,785.83-198,401.11-83,344.67

Finding the Fourth Proportional to 143,785.83, 198,401.11 and 83,344.67

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Solution

The fourth proportional to 143,785.83, 198,401.11 and 83,344.67 is: 115,002.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,785.83 : 198,401.11 = 83,344.67 : x
  2. Step 2: Convert to fraction form
    143,785.83/198,401.11 = 83,344.67/x
  3. Step 3: Cross multiply
    143,785.83x = 198,401.11 × 83,344.67
  4. Step 4: Simplify right side
    143,785.83x = 16,535,675,040.58
  5. Step 5: Solve for x
    x = 16,535,675,040.58/143,785.83
  6. Step 6: Final answer
    x = 115,002.12

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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.