Home / 118,290.30-163,418.67-77,551.22

Finding the Fourth Proportional to 118,290.30, 163,418.67 and 77,551.22

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Solution

The fourth proportional to 118,290.30, 163,418.67 and 77,551.22 is: 107,137.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,290.30 : 163,418.67 = 77,551.22 : x
  2. Step 2: Convert to fraction form
    118,290.30/163,418.67 = 77,551.22/x
  3. Step 3: Cross multiply
    118,290.30x = 163,418.67 × 77,551.22
  4. Step 4: Simplify right side
    118,290.30x = 12,673,317,229.28
  5. Step 5: Solve for x
    x = 12,673,317,229.28/118,290.30
  6. Step 6: Final answer
    x = 107,137.42

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1.5x scale

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.