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Finding the Fourth Proportional to 150,803.46, 208,049.13 and 87,129.54

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Solution

The fourth proportional to 150,803.46, 208,049.13 and 87,129.54 is: 120,204.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    150,803.46 : 208,049.13 = 87,129.54 : x
  2. Step 2: Convert to fraction form
    150,803.46/208,049.13 = 87,129.54/x
  3. Step 3: Cross multiply
    150,803.46x = 208,049.13 × 87,129.54
  4. Step 4: Simplify right side
    150,803.46x = 18,127,224,994.30
  5. Step 5: Solve for x
    x = 18,127,224,994.30/150,803.46
  6. Step 6: Final answer
    x = 120,204.30

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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.