Home / 208,460,138.52-312,738,244.98-72,145,521.84

Finding the Fourth Proportional to 208,460,138.52, 312,738,244.98 and 72,145,521.84

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Solution

The fourth proportional to 208,460,138.52, 312,738,244.98 and 72,145,521.84 is: 108,234,907.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,460,138.52 : 312,738,244.98 = 72,145,521.84 : x
  2. Step 2: Convert to fraction form
    208,460,138.52/312,738,244.98 = 72,145,521.84/x
  3. Step 3: Cross multiply
    208,460,138.52x = 312,738,244.98 × 72,145,521.84
  4. Step 4: Simplify right side
    208,460,138.52x = 22,562,663,883,407,864
  5. Step 5: Solve for x
    x = 22,562,663,883,407,864/208,460,138.52
  6. Step 6: Final answer
    x = 108,234,907.85

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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.