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Finding the Fourth Proportional to 134,764.40, 202,146.60 and 128,203.40

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Solution

The fourth proportional to 134,764.40, 202,146.60 and 128,203.40 is: 192,305.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,764.40 : 202,146.60 = 128,203.40 : x
  2. Step 2: Convert to fraction form
    134,764.40/202,146.60 = 128,203.40/x
  3. Step 3: Cross multiply
    134,764.40x = 202,146.60 × 128,203.40
  4. Step 4: Simplify right side
    134,764.40x = 25,915,881,418.44
  5. Step 5: Solve for x
    x = 25,915,881,418.44/134,764.40
  6. Step 6: Final answer
    x = 192,305.10

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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.