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Finding the Fourth Proportional to 134,690.80, 201,906.60 and 104,688.40

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Solution

The fourth proportional to 134,690.80, 201,906.60 and 104,688.40 is: 156,931.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,690.80 : 201,906.60 = 104,688.40 : x
  2. Step 2: Convert to fraction form
    134,690.80/201,906.60 = 104,688.40/x
  3. Step 3: Cross multiply
    134,690.80x = 201,906.60 × 104,688.40
  4. Step 4: Simplify right side
    134,690.80x = 21,137,278,903.44
  5. Step 5: Solve for x
    x = 21,137,278,903.44/134,690.80
  6. Step 6: Final answer
    x = 156,931.87

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.