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Finding the Fourth Proportional to 104,659.60, 156,989.40 and 103,675.45

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Solution

The fourth proportional to 104,659.60, 156,989.40 and 103,675.45 is: 155,513.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,659.60 : 156,989.40 = 103,675.45 : x
  2. Step 2: Convert to fraction form
    104,659.60/156,989.40 = 103,675.45/x
  3. Step 3: Cross multiply
    104,659.60x = 156,989.40 × 103,675.45
  4. Step 4: Simplify right side
    104,659.60x = 16,275,946,690.23
  5. Step 5: Solve for x
    x = 16,275,946,690.23/104,659.60
  6. Step 6: Final answer
    x = 155,513.18

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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.