Home / 100,128,862.72-150,236,454.66-54,061,589.08

Finding the Fourth Proportional to 100,128,862.72, 150,236,454.66 and 54,061,589.08

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Solution

The fourth proportional to 100,128,862.72, 150,236,454.66 and 54,061,589.08 is: 81,115,686.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,128,862.72 : 150,236,454.66 = 54,061,589.08 : x
  2. Step 2: Convert to fraction form
    100,128,862.72/150,236,454.66 = 54,061,589.08/x
  3. Step 3: Cross multiply
    100,128,862.72x = 150,236,454.66 × 54,061,589.08
  4. Step 4: Simplify right side
    100,128,862.72x = 8,122,021,476,664,971
  5. Step 5: Solve for x
    x = 8,122,021,476,664,971/100,128,862.72
  6. Step 6: Final answer
    x = 81,115,686.89

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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.