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Finding the Fourth Proportional to 104,808.40, 157,212.60 and 84,072.40

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Solution

The fourth proportional to 104,808.40, 157,212.60 and 84,072.40 is: 126,108.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,808.40 : 157,212.60 = 84,072.40 : x
  2. Step 2: Convert to fraction form
    104,808.40/157,212.60 = 84,072.40/x
  3. Step 3: Cross multiply
    104,808.40x = 157,212.60 × 84,072.40
  4. Step 4: Simplify right side
    104,808.40x = 13,217,240,592.24
  5. Step 5: Solve for x
    x = 13,217,240,592.24/104,808.40
  6. Step 6: Final answer
    x = 126,108.60

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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.