Home / 91,515.03-126,531.72-80,151.94

Finding the Fourth Proportional to 91,515.03, 126,531.72 and 80,151.94

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Solution

The fourth proportional to 91,515.03, 126,531.72 and 80,151.94 is: 110,820.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,515.03 : 126,531.72 = 80,151.94 : x
  2. Step 2: Convert to fraction form
    91,515.03/126,531.72 = 80,151.94/x
  3. Step 3: Cross multiply
    91,515.03x = 126,531.72 × 80,151.94
  4. Step 4: Simplify right side
    91,515.03x = 10,141,762,987.70
  5. Step 5: Solve for x
    x = 10,141,762,987.70/91,515.03
  6. Step 6: Final answer
    x = 110,820.74

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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.