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Finding the Fourth Proportional to 201,435.80, 302,387.10 and 108,123.80

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Solution

The fourth proportional to 201,435.80, 302,387.10 and 108,123.80 is: 162,310.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,435.80 : 302,387.10 = 108,123.80 : x
  2. Step 2: Convert to fraction form
    201,435.80/302,387.10 = 108,123.80/x
  3. Step 3: Cross multiply
    201,435.80x = 302,387.10 × 108,123.80
  4. Step 4: Simplify right side
    201,435.80x = 32,695,242,322.98
  5. Step 5: Solve for x
    x = 32,695,242,322.98/201,435.80
  6. Step 6: Final answer
    x = 162,310.98

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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.