Home / 185,931.90-278,742.42-86,163.60

Finding the Fourth Proportional to 185,931.90, 278,742.42 and 86,163.60

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Solution

The fourth proportional to 185,931.90, 278,742.42 and 86,163.60 is: 129,173.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,931.90 : 278,742.42 = 86,163.60 : x
  2. Step 2: Convert to fraction form
    185,931.90/278,742.42 = 86,163.60/x
  3. Step 3: Cross multiply
    185,931.90x = 278,742.42 × 86,163.60
  4. Step 4: Simplify right side
    185,931.90x = 24,017,450,379.91
  5. Step 5: Solve for x
    x = 24,017,450,379.91/185,931.90
  6. Step 6: Final answer
    x = 129,173.37

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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.