Home / 145,215,067.84-200,390,962.69-79,134,157.69

Finding the Fourth Proportional to 145,215,067.84, 200,390,962.69 and 79,134,157.69

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Solution

The fourth proportional to 145,215,067.84, 200,390,962.69 and 79,134,157.69 is: 109,201,960.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,215,067.84 : 200,390,962.69 = 79,134,157.69 : x
  2. Step 2: Convert to fraction form
    145,215,067.84/200,390,962.69 = 79,134,157.69/x
  3. Step 3: Cross multiply
    145,215,067.84x = 200,390,962.69 × 79,134,157.69
  4. Step 4: Simplify right side
    145,215,067.84x = 15,857,770,040,759,306
  5. Step 5: Solve for x
    x = 15,857,770,040,759,306/145,215,067.84
  6. Step 6: Final answer
    x = 109,201,960.08

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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.