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Finding the Fourth Proportional to 202,171.90, 302,929.80 and 127,157.80

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Solution

The fourth proportional to 202,171.90, 302,929.80 and 127,157.80 is: 190,530.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,171.90 : 302,929.80 = 127,157.80 : x
  2. Step 2: Convert to fraction form
    202,171.90/302,929.80 = 127,157.80/x
  3. Step 3: Cross multiply
    202,171.90x = 302,929.80 × 127,157.80
  4. Step 4: Simplify right side
    202,171.90x = 38,519,886,922.44
  5. Step 5: Solve for x
    x = 38,519,886,922.44/202,171.90
  6. Step 6: Final answer
    x = 190,530.37

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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.