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Finding the Fourth Proportional to 201,777.60, 302,642.10 and 83,436.60

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Solution

The fourth proportional to 201,777.60, 302,642.10 and 83,436.60 is: 125,144.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,777.60 : 302,642.10 = 83,436.60 : x
  2. Step 2: Convert to fraction form
    201,777.60/302,642.10 = 83,436.60/x
  3. Step 3: Cross multiply
    201,777.60x = 302,642.10 × 83,436.60
  4. Step 4: Simplify right side
    201,777.60x = 25,251,427,840.86
  5. Step 5: Solve for x
    x = 25,251,427,840.86/201,777.60
  6. Step 6: Final answer
    x = 125,144.85

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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.