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Finding the Fourth Proportional to 201,982.90, 302,901.45 and 102,109.90

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Solution

The fourth proportional to 201,982.90, 302,901.45 and 102,109.90 is: 153,128.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,982.90 : 302,901.45 = 102,109.90 : x
  2. Step 2: Convert to fraction form
    201,982.90/302,901.45 = 102,109.90/x
  3. Step 3: Cross multiply
    201,982.90x = 302,901.45 × 102,109.90
  4. Step 4: Simplify right side
    201,982.90x = 30,929,236,769.36
  5. Step 5: Solve for x
    x = 30,929,236,769.36/201,982.90
  6. Step 6: Final answer
    x = 153,128.00

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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.