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Finding the Fourth Proportional to 201,658.90, 302,634.15 and 112,818.10

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Solution

The fourth proportional to 201,658.90, 302,634.15 and 112,818.10 is: 169,308.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,658.90 : 302,634.15 = 112,818.10 : x
  2. Step 2: Convert to fraction form
    201,658.90/302,634.15 = 112,818.10/x
  3. Step 3: Cross multiply
    201,658.90x = 302,634.15 × 112,818.10
  4. Step 4: Simplify right side
    201,658.90x = 34,142,609,798.12
  5. Step 5: Solve for x
    x = 34,142,609,798.12/201,658.90
  6. Step 6: Final answer
    x = 169,308.72

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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.