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Finding the Fourth Proportional to 180,071.56, 248,509.62 and 129,099.88

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Solution

The fourth proportional to 180,071.56, 248,509.62 and 129,099.88 is: 178,165.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    180,071.56 : 248,509.62 = 129,099.88 : x
  2. Step 2: Convert to fraction form
    180,071.56/248,509.62 = 129,099.88/x
  3. Step 3: Cross multiply
    180,071.56x = 248,509.62 × 129,099.88
  4. Step 4: Simplify right side
    180,071.56x = 32,082,562,120.85
  5. Step 5: Solve for x
    x = 32,082,562,120.85/180,071.56
  6. Step 6: Final answer
    x = 178,165.63

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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.