Home / 143,320,748,398.88-197,787,383,109.32-78,218,740,319.24

Finding the Fourth Proportional to 143,320,748,398.88, 197,787,383,109.32 and 78,218,740,319.24

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Solution

The fourth proportional to 143,320,748,398.88, 197,787,383,109.32 and 78,218,740,319.24 is: 107,944,454,174.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,320,748,398.88 : 197,787,383,109.32 = 78,218,740,319.24 : x
  2. Step 2: Convert to fraction form
    143,320,748,398.88/197,787,383,109.32 = 78,218,740,319.24/x
  3. Step 3: Cross multiply
    143,320,748,398.88x = 197,787,383,109.32 × 78,218,740,319.24
  4. Step 4: Simplify right side
    143,320,748,398.88x = 15,470,679,957,850,728,431,616
  5. Step 5: Solve for x
    x = 15,470,679,957,850,728,431,616/143,320,748,398.88
  6. Step 6: Final answer
    x = 107,944,454,174.87

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1.5x scale

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.