Home / 104,428.72-156,445.80-80,940.16

Finding the Fourth Proportional to 104,428.72, 156,445.80 and 80,940.16

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Solution

The fourth proportional to 104,428.72, 156,445.80 and 80,940.16 is: 121,257.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,428.72 : 156,445.80 = 80,940.16 : x
  2. Step 2: Convert to fraction form
    104,428.72/156,445.80 = 80,940.16/x
  3. Step 3: Cross multiply
    104,428.72x = 156,445.80 × 80,940.16
  4. Step 4: Simplify right side
    104,428.72x = 12,662,748,083.33
  5. Step 5: Solve for x
    x = 12,662,748,083.33/104,428.72
  6. Step 6: Final answer
    x = 121,257.33

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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.