Home / 210,669.12-315,939.40-110,775.12

Finding the Fourth Proportional to 210,669.12, 315,939.40 and 110,775.12

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Solution

The fourth proportional to 210,669.12, 315,939.40 and 110,775.12 is: 166,128.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,669.12 : 315,939.40 = 110,775.12 : x
  2. Step 2: Convert to fraction form
    210,669.12/315,939.40 = 110,775.12/x
  3. Step 3: Cross multiply
    210,669.12x = 315,939.40 × 110,775.12
  4. Step 4: Simplify right side
    210,669.12x = 34,998,224,947.73
  5. Step 5: Solve for x
    x = 34,998,224,947.73/210,669.12
  6. Step 6: Final answer
    x = 166,128.88

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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.