Home / 198,162,685,402.58-297,122,380,023.78-77,009,779,373.13

Finding the Fourth Proportional to 198,162,685,402.58, 297,122,380,023.78 and 77,009,779,373.13

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Solution

The fourth proportional to 198,162,685,402.58, 297,122,380,023.78 and 77,009,779,373.13 is: 115,467,394,307.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,162,685,402.58 : 297,122,380,023.78 = 77,009,779,373.13 : x
  2. Step 2: Convert to fraction form
    198,162,685,402.58/297,122,380,023.78 = 77,009,779,373.13/x
  3. Step 3: Cross multiply
    198,162,685,402.58x = 297,122,380,023.78 × 77,009,779,373.13
  4. Step 4: Simplify right side
    198,162,685,402.58x = 22,881,328,932,450,591,571,968
  5. Step 5: Solve for x
    x = 22,881,328,932,450,591,571,968/198,162,685,402.58
  6. Step 6: Final answer
    x = 115,467,394,307.69

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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.