Home / 209,125.49-313,511.87-90,707.67

Finding the Fourth Proportional to 209,125.49, 313,511.87 and 90,707.67

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Solution

The fourth proportional to 209,125.49, 313,511.87 and 90,707.67 is: 135,985.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,125.49 : 313,511.87 = 90,707.67 : x
  2. Step 2: Convert to fraction form
    209,125.49/313,511.87 = 90,707.67/x
  3. Step 3: Cross multiply
    209,125.49x = 313,511.87 × 90,707.67
  4. Step 4: Simplify right side
    209,125.49x = 28,437,930,791.50
  5. Step 5: Solve for x
    x = 28,437,930,791.50/209,125.49
  6. Step 6: Final answer
    x = 135,985.01

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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.