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Finding the Fourth Proportional to 104,690.60, 156,987.30 and 45,495.80

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Solution

The fourth proportional to 104,690.60, 156,987.30 and 45,495.80 is: 68,222.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,690.60 : 156,987.30 = 45,495.80 : x
  2. Step 2: Convert to fraction form
    104,690.60/156,987.30 = 45,495.80/x
  3. Step 3: Cross multiply
    104,690.60x = 156,987.30 × 45,495.80
  4. Step 4: Simplify right side
    104,690.60x = 7,142,262,803.34
  5. Step 5: Solve for x
    x = 7,142,262,803.34/104,690.60
  6. Step 6: Final answer
    x = 68,222.58

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.