Home / 84,499,848,020.40-126,749,772,030.60-78,114,619,834.80

Finding the Fourth Proportional to 84,499,848,020.40, 126,749,772,030.60 and 78,114,619,834.80

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Solution

The fourth proportional to 84,499,848,020.40, 126,749,772,030.60 and 78,114,619,834.80 is: 117,171,929,752.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,499,848,020.40 : 126,749,772,030.60 = 78,114,619,834.80 : x
  2. Step 2: Convert to fraction form
    84,499,848,020.40/126,749,772,030.60 = 78,114,619,834.80/x
  3. Step 3: Cross multiply
    84,499,848,020.40x = 126,749,772,030.60 × 78,114,619,834.80
  4. Step 4: Simplify right side
    84,499,848,020.40x = 9,901,010,256,317,885,972,480
  5. Step 5: Solve for x
    x = 9,901,010,256,317,885,972,480/84,499,848,020.40
  6. Step 6: Final answer
    x = 117,171,929,752.20

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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.