Home / 143,605.26-215,408.01-68,707.74

Finding the Fourth Proportional to 143,605.26, 215,408.01 and 68,707.74

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Solution

The fourth proportional to 143,605.26, 215,408.01 and 68,707.74 is: 103,061.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,605.26 : 215,408.01 = 68,707.74 : x
  2. Step 2: Convert to fraction form
    143,605.26/215,408.01 = 68,707.74/x
  3. Step 3: Cross multiply
    143,605.26x = 215,408.01 × 68,707.74
  4. Step 4: Simplify right side
    143,605.26x = 14,800,197,545.00
  5. Step 5: Solve for x
    x = 14,800,197,545.00/143,605.26
  6. Step 6: Final answer
    x = 103,061.67

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.