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Finding the Fourth Proportional to 201,702.08, 278,346.60 and 111,056.21

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Solution

The fourth proportional to 201,702.08, 278,346.60 and 111,056.21 is: 153,256.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,702.08 : 278,346.60 = 111,056.21 : x
  2. Step 2: Convert to fraction form
    201,702.08/278,346.60 = 111,056.21/x
  3. Step 3: Cross multiply
    201,702.08x = 278,346.60 × 111,056.21
  4. Step 4: Simplify right side
    201,702.08x = 30,912,118,462.39
  5. Step 5: Solve for x
    x = 30,912,118,462.39/201,702.08
  6. Step 6: Final answer
    x = 153,256.32

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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.