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Finding the Fourth Proportional to 210,135.36, 315,130.60 and 67,944.22

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Solution

The fourth proportional to 210,135.36, 315,130.60 and 67,944.22 is: 101,892.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,135.36 : 315,130.60 = 67,944.22 : x
  2. Step 2: Convert to fraction form
    210,135.36/315,130.60 = 67,944.22/x
  3. Step 3: Cross multiply
    210,135.36x = 315,130.60 × 67,944.22
  4. Step 4: Simplify right side
    210,135.36x = 21,411,302,112.24
  5. Step 5: Solve for x
    x = 21,411,302,112.24/210,135.36
  6. Step 6: Final answer
    x = 101,892.90

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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.