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Finding the Fourth Proportional to 139,968,124.40, 209,952,186.60 and 105,955,900.40

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Solution

The fourth proportional to 139,968,124.40, 209,952,186.60 and 105,955,900.40 is: 158,933,850.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,968,124.40 : 209,952,186.60 = 105,955,900.40 : x
  2. Step 2: Convert to fraction form
    139,968,124.40/209,952,186.60 = 105,955,900.40/x
  3. Step 3: Cross multiply
    139,968,124.40x = 209,952,186.60 × 105,955,900.40
  4. Step 4: Simplify right side
    139,968,124.40x = 22,245,672,972,151,816
  5. Step 5: Solve for x
    x = 22,245,672,972,151,816/139,968,124.40
  6. Step 6: Final answer
    x = 158,933,850.60

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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.