Home / 158,112.45-218,193.41-86,491.62

Finding the Fourth Proportional to 158,112.45, 218,193.41 and 86,491.62

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Solution

The fourth proportional to 158,112.45, 218,193.41 and 86,491.62 is: 119,357.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,112.45 : 218,193.41 = 86,491.62 : x
  2. Step 2: Convert to fraction form
    158,112.45/218,193.41 = 86,491.62/x
  3. Step 3: Cross multiply
    158,112.45x = 218,193.41 × 86,491.62
  4. Step 4: Simplify right side
    158,112.45x = 18,871,901,720.45
  5. Step 5: Solve for x
    x = 18,871,901,720.45/158,112.45
  6. Step 6: Final answer
    x = 119,357.47

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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.