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Finding the Fourth Proportional to 188,189.84, 259,638.63 and 120,246.53

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Solution

The fourth proportional to 188,189.84, 259,638.63 and 120,246.53 is: 165,899.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,189.84 : 259,638.63 = 120,246.53 : x
  2. Step 2: Convert to fraction form
    188,189.84/259,638.63 = 120,246.53/x
  3. Step 3: Cross multiply
    188,189.84x = 259,638.63 × 120,246.53
  4. Step 4: Simplify right side
    188,189.84x = 31,220,644,311.45
  5. Step 5: Solve for x
    x = 31,220,644,311.45/188,189.84
  6. Step 6: Final answer
    x = 165,899.74

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.