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Finding the Fourth Proportional to 104,652.60, 156,978.90 and 103,668.45

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Solution

The fourth proportional to 104,652.60, 156,978.90 and 103,668.45 is: 155,502.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,652.60 : 156,978.90 = 103,668.45 : x
  2. Step 2: Convert to fraction form
    104,652.60/156,978.90 = 103,668.45/x
  3. Step 3: Cross multiply
    104,652.60x = 156,978.90 × 103,668.45
  4. Step 4: Simplify right side
    104,652.60x = 16,273,759,245.71
  5. Step 5: Solve for x
    x = 16,273,759,245.71/104,652.60
  6. Step 6: Final answer
    x = 155,502.68

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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.