Home / 190,281.36-285,448.70-77,977.54

Finding the Fourth Proportional to 190,281.36, 285,448.70 and 77,977.54

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Solution

The fourth proportional to 190,281.36, 285,448.70 and 77,977.54 is: 116,977.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,281.36 : 285,448.70 = 77,977.54 : x
  2. Step 2: Convert to fraction form
    190,281.36/285,448.70 = 77,977.54/x
  3. Step 3: Cross multiply
    190,281.36x = 285,448.70 × 77,977.54
  4. Step 4: Simplify right side
    190,281.36x = 22,258,587,422.20
  5. Step 5: Solve for x
    x = 22,258,587,422.20/190,281.36
  6. Step 6: Final answer
    x = 116,977.24

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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.