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Finding the Fourth Proportional to 104,300.39, 156,456.64 and 40,258.90

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Solution

The fourth proportional to 104,300.39, 156,456.64 and 40,258.90 is: 60,390.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,300.39 : 156,456.64 = 40,258.90 : x
  2. Step 2: Convert to fraction form
    104,300.39/156,456.64 = 40,258.90/x
  3. Step 3: Cross multiply
    104,300.39x = 156,456.64 × 40,258.90
  4. Step 4: Simplify right side
    104,300.39x = 6,298,772,319.02
  5. Step 5: Solve for x
    x = 6,298,772,319.02/104,300.39
  6. Step 6: Final answer
    x = 60,390.69

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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.