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Finding the Fourth Proportional to 201,139.20, 301,708.53 and 51,379.60

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Solution

The fourth proportional to 201,139.20, 301,708.53 and 51,379.60 is: 77,069.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,139.20 : 301,708.53 = 51,379.60 : x
  2. Step 2: Convert to fraction form
    201,139.20/301,708.53 = 51,379.60/x
  3. Step 3: Cross multiply
    201,139.20x = 301,708.53 × 51,379.60
  4. Step 4: Simplify right side
    201,139.20x = 15,501,663,587.99
  5. Step 5: Solve for x
    x = 15,501,663,587.99/201,139.20
  6. Step 6: Final answer
    x = 77,069.33

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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.