Home / 112,515.06-155,197.61-72,164.91

Finding the Fourth Proportional to 112,515.06, 155,197.61 and 72,164.91

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Solution

The fourth proportional to 112,515.06, 155,197.61 and 72,164.91 is: 99,540.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,515.06 : 155,197.61 = 72,164.91 : x
  2. Step 2: Convert to fraction form
    112,515.06/155,197.61 = 72,164.91/x
  3. Step 3: Cross multiply
    112,515.06x = 155,197.61 × 72,164.91
  4. Step 4: Simplify right side
    112,515.06x = 11,199,821,197.04
  5. Step 5: Solve for x
    x = 11,199,821,197.04/112,515.06
  6. Step 6: Final answer
    x = 99,540.64

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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.