Home / 200,009,173.28-300,025,307.40-77,188,128.08

Finding the Fourth Proportional to 200,009,173.28, 300,025,307.40 and 77,188,128.08

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Solution

The fourth proportional to 200,009,173.28, 300,025,307.40 and 77,188,128.08 is: 115,786,648.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    200,009,173.28 : 300,025,307.40 = 77,188,128.08 : x
  2. Step 2: Convert to fraction form
    200,009,173.28/300,025,307.40 = 77,188,128.08/x
  3. Step 3: Cross multiply
    200,009,173.28x = 300,025,307.40 × 77,188,128.08
  4. Step 4: Simplify right side
    200,009,173.28x = 23,158,391,854,832,568
  5. Step 5: Solve for x
    x = 23,158,391,854,832,568/200,009,173.28
  6. Step 6: Final answer
    x = 115,786,648.56

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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.