Home / 208,089,042.30-312,039,085.05-78,653,634.30

Finding the Fourth Proportional to 208,089,042.30, 312,039,085.05 and 78,653,634.30

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Solution

The fourth proportional to 208,089,042.30, 312,039,085.05 and 78,653,634.30 is: 117,944,740.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,089,042.30 : 312,039,085.05 = 78,653,634.30 : x
  2. Step 2: Convert to fraction form
    208,089,042.30/312,039,085.05 = 78,653,634.30/x
  3. Step 3: Cross multiply
    208,089,042.30x = 312,039,085.05 × 78,653,634.30
  4. Step 4: Simplify right side
    208,089,042.30x = 24,543,008,082,829,296
  5. Step 5: Solve for x
    x = 24,543,008,082,829,296/208,089,042.30
  6. Step 6: Final answer
    x = 117,944,740.44

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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.