Home / 145,464,394.88-200,745,120.80-79,389,131.20

Finding the Fourth Proportional to 145,464,394.88, 200,745,120.80 and 79,389,131.20

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Solution

The fourth proportional to 145,464,394.88, 200,745,120.80 and 79,389,131.20 is: 109,559,323.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,464,394.88 : 200,745,120.80 = 79,389,131.20 : x
  2. Step 2: Convert to fraction form
    145,464,394.88/200,745,120.80 = 79,389,131.20/x
  3. Step 3: Cross multiply
    145,464,394.88x = 200,745,120.80 × 79,389,131.20
  4. Step 4: Simplify right side
    145,464,394.88x = 15,936,980,732,951,050
  5. Step 5: Solve for x
    x = 15,936,980,732,951,050/145,464,394.88
  6. Step 6: Final answer
    x = 109,559,323.75

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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.