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Finding the Fourth Proportional to 104,657.40, 156,982.60 and 45,493.08

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Solution

The fourth proportional to 104,657.40, 156,982.60 and 45,493.08 is: 68,238.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,657.40 : 156,982.60 = 45,493.08 : x
  2. Step 2: Convert to fraction form
    104,657.40/156,982.60 = 45,493.08/x
  3. Step 3: Cross multiply
    104,657.40x = 156,982.60 × 45,493.08
  4. Step 4: Simplify right side
    104,657.40x = 7,141,621,980.41
  5. Step 5: Solve for x
    x = 7,141,621,980.41/104,657.40
  6. Step 6: Final answer
    x = 68,238.10

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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.