Home / 202,001.05-278,763.39-111,360.55

Finding the Fourth Proportional to 202,001.05, 278,763.39 and 111,360.55

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Solution

The fourth proportional to 202,001.05, 278,763.39 and 111,360.55 is: 153,678.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,001.05 : 278,763.39 = 111,360.55 : x
  2. Step 2: Convert to fraction form
    202,001.05/278,763.39 = 111,360.55/x
  3. Step 3: Cross multiply
    202,001.05x = 278,763.39 × 111,360.55
  4. Step 4: Simplify right side
    202,001.05x = 31,043,244,430.26
  5. Step 5: Solve for x
    x = 31,043,244,430.26/202,001.05
  6. Step 6: Final answer
    x = 153,678.63

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1.5x scale

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.