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Finding the Fourth Proportional to 120,855.70, 181,283.55 and 54,327.70

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Solution

The fourth proportional to 120,855.70, 181,283.55 and 54,327.70 is: 81,491.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,855.70 : 181,283.55 = 54,327.70 : x
  2. Step 2: Convert to fraction form
    120,855.70/181,283.55 = 54,327.70/x
  3. Step 3: Cross multiply
    120,855.70x = 181,283.55 × 54,327.70
  4. Step 4: Simplify right side
    120,855.70x = 9,848,718,319.34
  5. Step 5: Solve for x
    x = 9,848,718,319.34/120,855.70
  6. Step 6: Final answer
    x = 81,491.55

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1.5x scale

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.