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Finding the Fourth Proportional to 202,512.60, 303,477.30 and 90,100.80

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Solution

The fourth proportional to 202,512.60, 303,477.30 and 90,100.80 is: 135,021.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,512.60 : 303,477.30 = 90,100.80 : x
  2. Step 2: Convert to fraction form
    202,512.60/303,477.30 = 90,100.80/x
  3. Step 3: Cross multiply
    202,512.60x = 303,477.30 × 90,100.80
  4. Step 4: Simplify right side
    202,512.60x = 27,343,547,511.84
  5. Step 5: Solve for x
    x = 27,343,547,511.84/202,512.60
  6. Step 6: Final answer
    x = 135,021.46

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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.