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Finding the Fourth Proportional to 113,270.56, 156,083.03 and 87,621.14

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Solution

The fourth proportional to 113,270.56, 156,083.03 and 87,621.14 is: 120,738.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,270.56 : 156,083.03 = 87,621.14 : x
  2. Step 2: Convert to fraction form
    113,270.56/156,083.03 = 87,621.14/x
  3. Step 3: Cross multiply
    113,270.56x = 156,083.03 × 87,621.14
  4. Step 4: Simplify right side
    113,270.56x = 13,676,173,023.25
  5. Step 5: Solve for x
    x = 13,676,173,023.25/113,270.56
  6. Step 6: Final answer
    x = 120,738.99

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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.