Home / 128,622,800.34-192,825,742.62-55,784,721.60

Finding the Fourth Proportional to 128,622,800.34, 192,825,742.62 and 55,784,721.60

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Solution

The fourth proportional to 128,622,800.34, 192,825,742.62 and 55,784,721.60 is: 83,630,043.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,622,800.34 : 192,825,742.62 = 55,784,721.60 : x
  2. Step 2: Convert to fraction form
    128,622,800.34/192,825,742.62 = 55,784,721.60/x
  3. Step 3: Cross multiply
    128,622,800.34x = 192,825,742.62 × 55,784,721.60
  4. Step 4: Simplify right side
    128,622,800.34x = 10,756,730,369,579,148
  5. Step 5: Solve for x
    x = 10,756,730,369,579,148/128,622,800.34
  6. Step 6: Final answer
    x = 83,630,043.36

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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.