Home / 80,916,765,345.60-121,375,148,018.40-79,677,019,780.80

Finding the Fourth Proportional to 80,916,765,345.60, 121,375,148,018.40 and 79,677,019,780.80

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Solution

The fourth proportional to 80,916,765,345.60, 121,375,148,018.40 and 79,677,019,780.80 is: 119,515,529,671.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,916,765,345.60 : 121,375,148,018.40 = 79,677,019,780.80 : x
  2. Step 2: Convert to fraction form
    80,916,765,345.60/121,375,148,018.40 = 79,677,019,780.80/x
  3. Step 3: Cross multiply
    80,916,765,345.60x = 121,375,148,018.40 × 79,677,019,780.80
  4. Step 4: Simplify right side
    80,916,765,345.60x = 9,670,810,069,559,584,751,616
  5. Step 5: Solve for x
    x = 9,670,810,069,559,584,751,616/80,916,765,345.60
  6. Step 6: Final answer
    x = 119,515,529,671.20

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1.5x scale

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.