Home / 210,100.32-315,153.22-69,858.94

Finding the Fourth Proportional to 210,100.32, 315,153.22 and 69,858.94

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Solution

The fourth proportional to 210,100.32, 315,153.22 and 69,858.94 is: 104,789.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,100.32 : 315,153.22 = 69,858.94 : x
  2. Step 2: Convert to fraction form
    210,100.32/315,153.22 = 69,858.94/x
  3. Step 3: Cross multiply
    210,100.32x = 315,153.22 × 69,858.94
  4. Step 4: Simplify right side
    210,100.32x = 22,016,269,537.49
  5. Step 5: Solve for x
    x = 22,016,269,537.49/210,100.32
  6. Step 6: Final answer
    x = 104,789.32

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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.