Home / 112,645.90-155,448.97-61,657.44

Finding the Fourth Proportional to 112,645.90, 155,448.97 and 61,657.44

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Solution

The fourth proportional to 112,645.90, 155,448.97 and 61,657.44 is: 85,085.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,645.90 : 155,448.97 = 61,657.44 : x
  2. Step 2: Convert to fraction form
    112,645.90/155,448.97 = 61,657.44/x
  3. Step 3: Cross multiply
    112,645.90x = 155,448.97 × 61,657.44
  4. Step 4: Simplify right side
    112,645.90x = 9,584,585,540.84
  5. Step 5: Solve for x
    x = 9,584,585,540.84/112,645.90
  6. Step 6: Final answer
    x = 85,085.97

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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.