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Finding the Fourth Proportional to 123,930.78, 171,024.05 and 70,226.03

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Solution

The fourth proportional to 123,930.78, 171,024.05 and 70,226.03 is: 96,911.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,930.78 : 171,024.05 = 70,226.03 : x
  2. Step 2: Convert to fraction form
    123,930.78/171,024.05 = 70,226.03/x
  3. Step 3: Cross multiply
    123,930.78x = 171,024.05 × 70,226.03
  4. Step 4: Simplify right side
    123,930.78x = 12,010,338,859.77
  5. Step 5: Solve for x
    x = 12,010,338,859.77/123,930.78
  6. Step 6: Final answer
    x = 96,911.67

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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.