Home / 143,470,915,632.61-197,988,686,947.10-78,365,384,446.53

Finding the Fourth Proportional to 143,470,915,632.61, 197,988,686,947.10 and 78,365,384,446.53

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Solution

The fourth proportional to 143,470,915,632.61, 197,988,686,947.10 and 78,365,384,446.53 is: 108,143,587,850.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,470,915,632.61 : 197,988,686,947.10 = 78,365,384,446.53 : x
  2. Step 2: Convert to fraction form
    143,470,915,632.61/197,988,686,947.10 = 78,365,384,446.53/x
  3. Step 3: Cross multiply
    143,470,915,632.61x = 197,988,686,947.10 × 78,365,384,446.53
  4. Step 4: Simplify right side
    143,470,915,632.61x = 15,515,459,568,673,168,031,744
  5. Step 5: Solve for x
    x = 15,515,459,568,673,168,031,744/143,470,915,632.61
  6. Step 6: Final answer
    x = 108,143,587,850.27

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.