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Finding the Fourth Proportional to 201,901.30, 302,742.60 and 83,438.80

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Solution

The fourth proportional to 201,901.30, 302,742.60 and 83,438.80 is: 125,113.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,901.30 : 302,742.60 = 83,438.80 : x
  2. Step 2: Convert to fraction form
    201,901.30/302,742.60 = 83,438.80/x
  3. Step 3: Cross multiply
    201,901.30x = 302,742.60 × 83,438.80
  4. Step 4: Simplify right side
    201,901.30x = 25,260,479,252.88
  5. Step 5: Solve for x
    x = 25,260,479,252.88/201,901.30
  6. Step 6: Final answer
    x = 125,113.01

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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.