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Finding the Fourth Proportional to 201,509.37, 302,199.66 and 66,543.39

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Solution

The fourth proportional to 201,509.37, 302,199.66 and 66,543.39 is: 99,793.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,509.37 : 302,199.66 = 66,543.39 : x
  2. Step 2: Convert to fraction form
    201,509.37/302,199.66 = 66,543.39/x
  3. Step 3: Cross multiply
    201,509.37x = 302,199.66 × 66,543.39
  4. Step 4: Simplify right side
    201,509.37x = 20,109,389,833.25
  5. Step 5: Solve for x
    x = 20,109,389,833.25/201,509.37
  6. Step 6: Final answer
    x = 99,793.82

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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.