Home / 113,055.98-155,928.23-100,149.06

Finding the Fourth Proportional to 113,055.98, 155,928.23 and 100,149.06

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Solution

The fourth proportional to 113,055.98, 155,928.23 and 100,149.06 is: 138,126.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,055.98 : 155,928.23 = 100,149.06 : x
  2. Step 2: Convert to fraction form
    113,055.98/155,928.23 = 100,149.06/x
  3. Step 3: Cross multiply
    113,055.98x = 155,928.23 × 100,149.06
  4. Step 4: Simplify right side
    113,055.98x = 15,616,065,661.96
  5. Step 5: Solve for x
    x = 15,616,065,661.96/113,055.98
  6. Step 6: Final answer
    x = 138,126.84

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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.