Home / 201,620.10-302,138.55-89,208.30

Finding the Fourth Proportional to 201,620.10, 302,138.55 and 89,208.30

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Solution

The fourth proportional to 201,620.10, 302,138.55 and 89,208.30 is: 133,683.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,620.10 : 302,138.55 = 89,208.30 : x
  2. Step 2: Convert to fraction form
    201,620.10/302,138.55 = 89,208.30/x
  3. Step 3: Cross multiply
    201,620.10x = 302,138.55 × 89,208.30
  4. Step 4: Simplify right side
    201,620.10x = 26,953,266,409.97
  5. Step 5: Solve for x
    x = 26,953,266,409.97/201,620.10
  6. Step 6: Final answer
    x = 133,683.43

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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.