Home / 84,499,848,014.40-126,749,772,021.60-78,114,619,828.80

Finding the Fourth Proportional to 84,499,848,014.40, 126,749,772,021.60 and 78,114,619,828.80

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Solution

The fourth proportional to 84,499,848,014.40, 126,749,772,021.60 and 78,114,619,828.80 is: 117,171,929,743.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,499,848,014.40 : 126,749,772,021.60 = 78,114,619,828.80 : x
  2. Step 2: Convert to fraction form
    84,499,848,014.40/126,749,772,021.60 = 78,114,619,828.80/x
  3. Step 3: Cross multiply
    84,499,848,014.40x = 126,749,772,021.60 × 78,114,619,828.80
  4. Step 4: Simplify right side
    84,499,848,014.40x = 9,901,010,254,854,354,894,848
  5. Step 5: Solve for x
    x = 9,901,010,254,854,354,894,848/84,499,848,014.40
  6. Step 6: Final answer
    x = 117,171,929,743.20

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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.