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Finding the Fourth Proportional to 201,118.10, 301,677.15 and 76,442.90

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Solution

The fourth proportional to 201,118.10, 301,677.15 and 76,442.90 is: 114,664.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,118.10 : 301,677.15 = 76,442.90 : x
  2. Step 2: Convert to fraction form
    201,118.10/301,677.15 = 76,442.90/x
  3. Step 3: Cross multiply
    201,118.10x = 301,677.15 × 76,442.90
  4. Step 4: Simplify right side
    201,118.10x = 23,061,076,209.74
  5. Step 5: Solve for x
    x = 23,061,076,209.74/201,118.10
  6. Step 6: Final answer
    x = 114,664.35

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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.