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Finding the Fourth Proportional to 201,700.08, 278,343.84 and 111,054.21

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Solution

The fourth proportional to 201,700.08, 278,343.84 and 111,054.21 is: 153,253.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,700.08 : 278,343.84 = 111,054.21 : x
  2. Step 2: Convert to fraction form
    201,700.08/278,343.84 = 111,054.21/x
  3. Step 3: Cross multiply
    201,700.08x = 278,343.84 × 111,054.21
  4. Step 4: Simplify right side
    201,700.08x = 30,911,255,259.57
  5. Step 5: Solve for x
    x = 30,911,255,259.57/201,700.08
  6. Step 6: Final answer
    x = 153,253.56

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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.