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Finding the Fourth Proportional to 201,786.64, 302,866.68 and 102,017.20

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Solution

The fourth proportional to 201,786.64, 302,866.68 and 102,017.20 is: 153,120.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,786.64 : 302,866.68 = 102,017.20 : x
  2. Step 2: Convert to fraction form
    201,786.64/302,866.68 = 102,017.20/x
  3. Step 3: Cross multiply
    201,786.64x = 302,866.68 × 102,017.20
  4. Step 4: Simplify right side
    201,786.64x = 30,897,610,666.90
  5. Step 5: Solve for x
    x = 30,897,610,666.90/201,786.64
  6. Step 6: Final answer
    x = 153,120.20

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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.