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Finding the Fourth Proportional to 132,509.77, 182,861.60 and 72,080.94

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Solution

The fourth proportional to 132,509.77, 182,861.60 and 72,080.94 is: 99,470.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,509.77 : 182,861.60 = 72,080.94 : x
  2. Step 2: Convert to fraction form
    132,509.77/182,861.60 = 72,080.94/x
  3. Step 3: Cross multiply
    132,509.77x = 182,861.60 × 72,080.94
  4. Step 4: Simplify right side
    132,509.77x = 13,180,835,720.09
  5. Step 5: Solve for x
    x = 13,180,835,720.09/132,509.77
  6. Step 6: Final answer
    x = 99,470.67

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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.