Home / 128,742,022.20-193,336,982.10-68,275,846.20

Finding the Fourth Proportional to 128,742,022.20, 193,336,982.10 and 68,275,846.20

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Solution

The fourth proportional to 128,742,022.20, 193,336,982.10 and 68,275,846.20 is: 102,532,536.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,742,022.20 : 193,336,982.10 = 68,275,846.20 : x
  2. Step 2: Convert to fraction form
    128,742,022.20/193,336,982.10 = 68,275,846.20/x
  3. Step 3: Cross multiply
    128,742,022.20x = 193,336,982.10 × 68,275,846.20
  4. Step 4: Simplify right side
    128,742,022.20x = 13,200,246,054,631,754
  5. Step 5: Solve for x
    x = 13,200,246,054,631,754/128,742,022.20
  6. Step 6: Final answer
    x = 102,532,536.22

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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.