Home / 208,029,941.42-312,065,557.40-76,906,587.38

Finding the Fourth Proportional to 208,029,941.42, 312,065,557.40 and 76,906,587.38

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Solution

The fourth proportional to 208,029,941.42, 312,065,557.40 and 76,906,587.38 is: 115,367,513.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,029,941.42 : 312,065,557.40 = 76,906,587.38 : x
  2. Step 2: Convert to fraction form
    208,029,941.42/312,065,557.40 = 76,906,587.38/x
  3. Step 3: Cross multiply
    208,029,941.42x = 312,065,557.40 × 76,906,587.38
  4. Step 4: Simplify right side
    208,029,941.42x = 23,999,897,057,103,444
  5. Step 5: Solve for x
    x = 23,999,897,057,103,444/208,029,941.42
  6. Step 6: Final answer
    x = 115,367,513.42

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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.