Home / 139,968,115.70-209,952,173.55-128,063,837.30

Finding the Fourth Proportional to 139,968,115.70, 209,952,173.55 and 128,063,837.30

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Solution

The fourth proportional to 139,968,115.70, 209,952,173.55 and 128,063,837.30 is: 192,095,755.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,968,115.70 : 209,952,173.55 = 128,063,837.30 : x
  2. Step 2: Convert to fraction form
    139,968,115.70/209,952,173.55 = 128,063,837.30/x
  3. Step 3: Cross multiply
    139,968,115.70x = 209,952,173.55 × 128,063,837.30
  4. Step 4: Simplify right side
    139,968,115.70x = 26,887,280,994,288,564
  5. Step 5: Solve for x
    x = 26,887,280,994,288,564/139,968,115.70
  6. Step 6: Final answer
    x = 192,095,755.95

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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.