Home / 78,299.48-117,453.31-22,143.67

Finding the Fourth Proportional to 78,299.48, 117,453.31 and 22,143.67

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Solution

The fourth proportional to 78,299.48, 117,453.31 and 22,143.67 is: 33,216.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,299.48 : 117,453.31 = 22,143.67 : x
  2. Step 2: Convert to fraction form
    78,299.48/117,453.31 = 22,143.67/x
  3. Step 3: Cross multiply
    78,299.48x = 117,453.31 × 22,143.67
  4. Step 4: Simplify right side
    78,299.48x = 2,600,846,988.06
  5. Step 5: Solve for x
    x = 2,600,846,988.06/78,299.48
  6. Step 6: Final answer
    x = 33,216.66

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1.5x scale

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.