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Finding the Fourth Proportional to 123,559, 185,340.12 and 40,453

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Solution

The fourth proportional to 123,559, 185,340.12 and 40,453 is: 60,680.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,559 : 185,340.12 = 40,453 : x
  2. Step 2: Convert to fraction form
    123,559/185,340.12 = 40,453/x
  3. Step 3: Cross multiply
    123,559x = 185,340.12 × 40,453
  4. Step 4: Simplify right side
    123,559x = 7,497,563,874.36
  5. Step 5: Solve for x
    x = 7,497,563,874.36/123,559
  6. Step 6: Final answer
    x = 60,680.03

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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.