Home / 81,864.09-122,795.73-70,736.92

Finding the Fourth Proportional to 81,864.09, 122,795.73 and 70,736.92

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Solution

The fourth proportional to 81,864.09, 122,795.73 and 70,736.92 is: 106,105.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,864.09 : 122,795.73 = 70,736.92 : x
  2. Step 2: Convert to fraction form
    81,864.09/122,795.73 = 70,736.92/x
  3. Step 3: Cross multiply
    81,864.09x = 122,795.73 × 70,736.92
  4. Step 4: Simplify right side
    81,864.09x = 8,686,191,422.36
  5. Step 5: Solve for x
    x = 8,686,191,422.36/81,864.09
  6. Step 6: Final answer
    x = 106,105.03

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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.