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Finding the Fourth Proportional to 135,099.34, 186,446.73 and 74,668.68

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Solution

The fourth proportional to 135,099.34, 186,446.73 and 74,668.68 is: 103,048.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,099.34 : 186,446.73 = 74,668.68 : x
  2. Step 2: Convert to fraction form
    135,099.34/186,446.73 = 74,668.68/x
  3. Step 3: Cross multiply
    135,099.34x = 186,446.73 × 74,668.68
  4. Step 4: Simplify right side
    135,099.34x = 13,921,731,219.42
  5. Step 5: Solve for x
    x = 13,921,731,219.42/135,099.34
  6. Step 6: Final answer
    x = 103,048.11

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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.