Home / 84,499,848,008.40-126,749,772,012.60-78,114,619,822.80

Finding the Fourth Proportional to 84,499,848,008.40, 126,749,772,012.60 and 78,114,619,822.80

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Solution

The fourth proportional to 84,499,848,008.40, 126,749,772,012.60 and 78,114,619,822.80 is: 117,171,929,734.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,499,848,008.40 : 126,749,772,012.60 = 78,114,619,822.80 : x
  2. Step 2: Convert to fraction form
    84,499,848,008.40/126,749,772,012.60 = 78,114,619,822.80/x
  3. Step 3: Cross multiply
    84,499,848,008.40x = 126,749,772,012.60 × 78,114,619,822.80
  4. Step 4: Simplify right side
    84,499,848,008.40x = 9,901,010,253,390,825,914,368
  5. Step 5: Solve for x
    x = 9,901,010,253,390,825,914,368/84,499,848,008.40
  6. Step 6: Final answer
    x = 117,171,929,734.20

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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.