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Finding the Fourth Proportional to 133,878.88, 200,690.76 and 45,086.68

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Solution

The fourth proportional to 133,878.88, 200,690.76 and 45,086.68 is: 67,587.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,878.88 : 200,690.76 = 45,086.68 : x
  2. Step 2: Convert to fraction form
    133,878.88/200,690.76 = 45,086.68/x
  3. Step 3: Cross multiply
    133,878.88x = 200,690.76 × 45,086.68
  4. Step 4: Simplify right side
    133,878.88x = 9,048,480,075.08
  5. Step 5: Solve for x
    x = 9,048,480,075.08/133,878.88
  6. Step 6: Final answer
    x = 67,587.06

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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.