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Finding the Fourth Proportional to 122,466.60, 169,011.48 and 81,560.60

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Solution

The fourth proportional to 122,466.60, 169,011.48 and 81,560.60 is: 112,558.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,466.60 : 169,011.48 = 81,560.60 : x
  2. Step 2: Convert to fraction form
    122,466.60/169,011.48 = 81,560.60/x
  3. Step 3: Cross multiply
    122,466.60x = 169,011.48 × 81,560.60
  4. Step 4: Simplify right side
    122,466.60x = 13,784,677,715.69
  5. Step 5: Solve for x
    x = 13,784,677,715.69/122,466.60
  6. Step 6: Final answer
    x = 112,558.67

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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.