Home / 117,579.42-162,219.78-77,290.02

Finding the Fourth Proportional to 117,579.42, 162,219.78 and 77,290.02

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Solution

The fourth proportional to 117,579.42, 162,219.78 and 77,290.02 is: 106,634.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,579.42 : 162,219.78 = 77,290.02 : x
  2. Step 2: Convert to fraction form
    117,579.42/162,219.78 = 77,290.02/x
  3. Step 3: Cross multiply
    117,579.42x = 162,219.78 × 77,290.02
  4. Step 4: Simplify right side
    117,579.42x = 12,537,970,040.60
  5. Step 5: Solve for x
    x = 12,537,970,040.60/117,579.42
  6. Step 6: Final answer
    x = 106,634.05

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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.