Home / 86,984.12-120,037.38-79,842.87

Finding the Fourth Proportional to 86,984.12, 120,037.38 and 79,842.87

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Solution

The fourth proportional to 86,984.12, 120,037.38 and 79,842.87 is: 110,182.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,984.12 : 120,037.38 = 79,842.87 : x
  2. Step 2: Convert to fraction form
    86,984.12/120,037.38 = 79,842.87/x
  3. Step 3: Cross multiply
    86,984.12x = 120,037.38 × 79,842.87
  4. Step 4: Simplify right side
    86,984.12x = 9,584,128,926.48
  5. Step 5: Solve for x
    x = 9,584,128,926.48/86,984.12
  6. Step 6: Final answer
    x = 110,182.52

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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.