Home / 103,431,928.80-155,147,893.20-45,863,090.40

Finding the Fourth Proportional to 103,431,928.80, 155,147,893.20 and 45,863,090.40

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Solution

The fourth proportional to 103,431,928.80, 155,147,893.20 and 45,863,090.40 is: 68,794,635.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,431,928.80 : 155,147,893.20 = 45,863,090.40 : x
  2. Step 2: Convert to fraction form
    103,431,928.80/155,147,893.20 = 45,863,090.40/x
  3. Step 3: Cross multiply
    103,431,928.80x = 155,147,893.20 × 45,863,090.40
  4. Step 4: Simplify right side
    103,431,928.80x = 7,115,561,851,201,145
  5. Step 5: Solve for x
    x = 7,115,561,851,201,145/103,431,928.80
  6. Step 6: Final answer
    x = 68,794,635.60

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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.