Home / 131,256.14-196,887-47,021.78

Finding the Fourth Proportional to 131,256.14, 196,887 and 47,021.78

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Solution

The fourth proportional to 131,256.14, 196,887 and 47,021.78 is: 70,533.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,256.14 : 196,887 = 47,021.78 : x
  2. Step 2: Convert to fraction form
    131,256.14/196,887 = 47,021.78/x
  3. Step 3: Cross multiply
    131,256.14x = 196,887 × 47,021.78
  4. Step 4: Simplify right side
    131,256.14x = 9,257,977,198.86
  5. Step 5: Solve for x
    x = 9,257,977,198.86/131,256.14
  6. Step 6: Final answer
    x = 70,533.67

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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.