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Finding the Fourth Proportional to 122,473.58, 169,000.47 and 68,764.50

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Solution

The fourth proportional to 122,473.58, 169,000.47 and 68,764.50 is: 94,887.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,473.58 : 169,000.47 = 68,764.50 : x
  2. Step 2: Convert to fraction form
    122,473.58/169,000.47 = 68,764.50/x
  3. Step 3: Cross multiply
    122,473.58x = 169,000.47 × 68,764.50
  4. Step 4: Simplify right side
    122,473.58x = 11,621,232,819.32
  5. Step 5: Solve for x
    x = 11,621,232,819.32/122,473.58
  6. Step 6: Final answer
    x = 94,887.68

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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.