Home / 201,921.09-278,652.93-111,280.29

Finding the Fourth Proportional to 201,921.09, 278,652.93 and 111,280.29

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Solution

The fourth proportional to 201,921.09, 278,652.93 and 111,280.29 is: 153,567.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,921.09 : 278,652.93 = 111,280.29 : x
  2. Step 2: Convert to fraction form
    201,921.09/278,652.93 = 111,280.29/x
  3. Step 3: Cross multiply
    201,921.09x = 278,652.93 × 111,280.29
  4. Step 4: Simplify right side
    201,921.09x = 31,008,578,859.75
  5. Step 5: Solve for x
    x = 31,008,578,859.75/201,921.09
  6. Step 6: Final answer
    x = 153,567.81

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.