Home / 192,382,911-265,516,781.76-121,824,961.20

Finding the Fourth Proportional to 192,382,911, 265,516,781.76 and 121,824,961.20

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Solution

The fourth proportional to 192,382,911, 265,516,781.76 and 121,824,961.20 is: 168,136,408.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,382,911 : 265,516,781.76 = 121,824,961.20 : x
  2. Step 2: Convert to fraction form
    192,382,911/265,516,781.76 = 121,824,961.20/x
  3. Step 3: Cross multiply
    192,382,911x = 265,516,781.76 × 121,824,961.20
  4. Step 4: Simplify right side
    192,382,911x = 32,346,571,635,860,868
  5. Step 5: Solve for x
    x = 32,346,571,635,860,868/192,382,911
  6. Step 6: Final answer
    x = 168,136,408.10

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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.