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Finding the Fourth Proportional to 180,236.21, 248,721.03 and 99,661.05

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Solution

The fourth proportional to 180,236.21, 248,721.03 and 99,661.05 is: 137,529.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    180,236.21 : 248,721.03 = 99,661.05 : x
  2. Step 2: Convert to fraction form
    180,236.21/248,721.03 = 99,661.05/x
  3. Step 3: Cross multiply
    180,236.21x = 248,721.03 × 99,661.05
  4. Step 4: Simplify right side
    180,236.21x = 24,787,799,006.88
  5. Step 5: Solve for x
    x = 24,787,799,006.88/180,236.21
  6. Step 6: Final answer
    x = 137,529.52

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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.