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Finding the Fourth Proportional to 103,606.99, 155,410.48 and 74,082.49

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Solution

The fourth proportional to 103,606.99, 155,410.48 and 74,082.49 is: 111,123.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,606.99 : 155,410.48 = 74,082.49 : x
  2. Step 2: Convert to fraction form
    103,606.99/155,410.48 = 74,082.49/x
  3. Step 3: Cross multiply
    103,606.99x = 155,410.48 × 74,082.49
  4. Step 4: Simplify right side
    103,606.99x = 11,513,195,330.50
  5. Step 5: Solve for x
    x = 11,513,195,330.50/103,606.99
  6. Step 6: Final answer
    x = 111,123.73

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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.