Home / 208,029,872.60-312,082,133.70-86,873,571.80

Finding the Fourth Proportional to 208,029,872.60, 312,082,133.70 and 86,873,571.80

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Solution

The fourth proportional to 208,029,872.60, 312,082,133.70 and 86,873,571.80 is: 130,325,944.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,029,872.60 : 312,082,133.70 = 86,873,571.80 : x
  2. Step 2: Convert to fraction form
    208,029,872.60/312,082,133.70 = 86,873,571.80/x
  3. Step 3: Cross multiply
    208,029,872.60x = 312,082,133.70 × 86,873,571.80
  4. Step 4: Simplify right side
    208,029,872.60x = 27,111,689,649,484,148
  5. Step 5: Solve for x
    x = 27,111,689,649,484,148/208,029,872.60
  6. Step 6: Final answer
    x = 130,325,944.59

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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.