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Finding the Fourth Proportional to 122,813.50, 169,482.63 and 69,821.50

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Solution

The fourth proportional to 122,813.50, 169,482.63 and 69,821.50 is: 96,353.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,813.50 : 169,482.63 = 69,821.50 : x
  2. Step 2: Convert to fraction form
    122,813.50/169,482.63 = 69,821.50/x
  3. Step 3: Cross multiply
    122,813.50x = 169,482.63 × 69,821.50
  4. Step 4: Simplify right side
    122,813.50x = 11,833,531,450.55
  5. Step 5: Solve for x
    x = 11,833,531,450.55/122,813.50
  6. Step 6: Final answer
    x = 96,353.67

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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.