Home / 208,008,087.60-312,049,456.20-86,851,786.80

Finding the Fourth Proportional to 208,008,087.60, 312,049,456.20 and 86,851,786.80

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Solution

The fourth proportional to 208,008,087.60, 312,049,456.20 and 86,851,786.80 is: 130,293,264.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,008,087.60 : 312,049,456.20 = 86,851,786.80 : x
  2. Step 2: Convert to fraction form
    208,008,087.60/312,049,456.20 = 86,851,786.80/x
  3. Step 3: Cross multiply
    208,008,087.60x = 312,049,456.20 × 86,851,786.80
  4. Step 4: Simplify right side
    208,008,087.60x = 27,102,052,840,938,336
  5. Step 5: Solve for x
    x = 27,102,052,840,938,336/208,008,087.60
  6. Step 6: Final answer
    x = 130,293,264.81

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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.