Home / 205,303.60-307,822.20-86,942.80

Finding the Fourth Proportional to 205,303.60, 307,822.20 and 86,942.80

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Solution

The fourth proportional to 205,303.60, 307,822.20 and 86,942.80 is: 130,357.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,303.60 : 307,822.20 = 86,942.80 : x
  2. Step 2: Convert to fraction form
    205,303.60/307,822.20 = 86,942.80/x
  3. Step 3: Cross multiply
    205,303.60x = 307,822.20 × 86,942.80
  4. Step 4: Simplify right side
    205,303.60x = 26,762,923,970.16
  5. Step 5: Solve for x
    x = 26,762,923,970.16/205,303.60
  6. Step 6: Final answer
    x = 130,357.79

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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.