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Finding the Fourth Proportional to 133,134,751.80, 199,702,127.70 and 128,032,918.20

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Solution

The fourth proportional to 133,134,751.80, 199,702,127.70 and 128,032,918.20 is: 192,049,377.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,134,751.80 : 199,702,127.70 = 128,032,918.20 : x
  2. Step 2: Convert to fraction form
    133,134,751.80/199,702,127.70 = 128,032,918.20/x
  3. Step 3: Cross multiply
    133,134,751.80x = 199,702,127.70 × 128,032,918.20
  4. Step 4: Simplify right side
    133,134,751.80x = 25,568,446,180,180,052
  5. Step 5: Solve for x
    x = 25,568,446,180,180,052/133,134,751.80
  6. Step 6: Final answer
    x = 192,049,377.30

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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.