Home / 112,849.40-155,661.36-72,615.44

Finding the Fourth Proportional to 112,849.40, 155,661.36 and 72,615.44

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Solution

The fourth proportional to 112,849.40, 155,661.36 and 72,615.44 is: 100,163.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,849.40 : 155,661.36 = 72,615.44 : x
  2. Step 2: Convert to fraction form
    112,849.40/155,661.36 = 72,615.44/x
  3. Step 3: Cross multiply
    112,849.40x = 155,661.36 × 72,615.44
  4. Step 4: Simplify right side
    112,849.40x = 11,303,418,147.40
  5. Step 5: Solve for x
    x = 11,303,418,147.40/112,849.40
  6. Step 6: Final answer
    x = 100,163.74

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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.