Home / 112,884.87-155,886.58-72,668.53

Finding the Fourth Proportional to 112,884.87, 155,886.58 and 72,668.53

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Solution

The fourth proportional to 112,884.87, 155,886.58 and 72,668.53 is: 100,350.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,884.87 : 155,886.58 = 72,668.53 : x
  2. Step 2: Convert to fraction form
    112,884.87/155,886.58 = 72,668.53/x
  3. Step 3: Cross multiply
    112,884.87x = 155,886.58 × 72,668.53
  4. Step 4: Simplify right side
    112,884.87x = 11,328,048,615.33
  5. Step 5: Solve for x
    x = 11,328,048,615.33/112,884.87
  6. Step 6: Final answer
    x = 100,350.46

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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.