Home / 99,778,857.60-149,780,260.80-77,160,028.80

Finding the Fourth Proportional to 99,778,857.60, 149,780,260.80 and 77,160,028.80

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Solution

The fourth proportional to 99,778,857.60, 149,780,260.80 and 77,160,028.80 is: 115,826,634.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,778,857.60 : 149,780,260.80 = 77,160,028.80 : x
  2. Step 2: Convert to fraction form
    99,778,857.60/149,780,260.80 = 77,160,028.80/x
  3. Step 3: Cross multiply
    99,778,857.60x = 149,780,260.80 × 77,160,028.80
  4. Step 4: Simplify right side
    99,778,857.60x = 11,557,049,236,999,512
  5. Step 5: Solve for x
    x = 11,557,049,236,999,512/99,778,857.60
  6. Step 6: Final answer
    x = 115,826,634.17

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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.