Home / 143,320,748,396.61-197,787,383,106.22-78,218,740,317.00

Finding the Fourth Proportional to 143,320,748,396.61, 197,787,383,106.22 and 78,218,740,317.00

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Solution

The fourth proportional to 143,320,748,396.61, 197,787,383,106.22 and 78,218,740,317.00 is: 107,944,454,171.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,320,748,396.61 : 197,787,383,106.22 = 78,218,740,317.00 : x
  2. Step 2: Convert to fraction form
    143,320,748,396.61/197,787,383,106.22 = 78,218,740,317.00/x
  3. Step 3: Cross multiply
    143,320,748,396.61x = 197,787,383,106.22 × 78,218,740,317.00
  4. Step 4: Simplify right side
    143,320,748,396.61x = 15,470,679,957,165,010,059,264
  5. Step 5: Solve for x
    x = 15,470,679,957,165,010,059,264/143,320,748,396.61
  6. Step 6: Final answer
    x = 107,944,454,171.79

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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.