Home / 86,944.40-130,416.60-81,112.40

Finding the Fourth Proportional to 86,944.40, 130,416.60 and 81,112.40

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Solution

The fourth proportional to 86,944.40, 130,416.60 and 81,112.40 is: 121,668.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,944.40 : 130,416.60 = 81,112.40 : x
  2. Step 2: Convert to fraction form
    86,944.40/130,416.60 = 81,112.40/x
  3. Step 3: Cross multiply
    86,944.40x = 130,416.60 × 81,112.40
  4. Step 4: Simplify right side
    86,944.40x = 10,578,403,425.84
  5. Step 5: Solve for x
    x = 10,578,403,425.84/86,944.40
  6. Step 6: Final answer
    x = 121,668.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.