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Finding the Fourth Proportional to 112,959.44, 155,987.70 and 72,743.84

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Solution

The fourth proportional to 112,959.44, 155,987.70 and 72,743.84 is: 100,453.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,959.44 : 155,987.70 = 72,743.84 : x
  2. Step 2: Convert to fraction form
    112,959.44/155,987.70 = 72,743.84/x
  3. Step 3: Cross multiply
    112,959.44x = 155,987.70 × 72,743.84
  4. Step 4: Simplify right side
    112,959.44x = 11,347,144,290.77
  5. Step 5: Solve for x
    x = 11,347,144,290.77/112,959.44
  6. Step 6: Final answer
    x = 100,453.26

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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.