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Finding the Fourth Proportional to 201,555.83, 278,146.49 and 110,917.67

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Solution

The fourth proportional to 201,555.83, 278,146.49 and 110,917.67 is: 153,066.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,555.83 : 278,146.49 = 110,917.67 : x
  2. Step 2: Convert to fraction form
    201,555.83/278,146.49 = 110,917.67/x
  3. Step 3: Cross multiply
    201,555.83x = 278,146.49 × 110,917.67
  4. Step 4: Simplify right side
    201,555.83x = 30,851,359,687.21
  5. Step 5: Solve for x
    x = 30,851,359,687.21/201,555.83
  6. Step 6: Final answer
    x = 153,066.08

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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.