Home / 139,972,470.80-209,591,290.20-98,809,631.60

Finding the Fourth Proportional to 139,972,470.80, 209,591,290.20 and 98,809,631.60

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Solution

The fourth proportional to 139,972,470.80, 209,591,290.20 and 98,809,631.60 is: 147,955,080.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,972,470.80 : 209,591,290.20 = 98,809,631.60 : x
  2. Step 2: Convert to fraction form
    139,972,470.80/209,591,290.20 = 98,809,631.60/x
  3. Step 3: Cross multiply
    139,972,470.80x = 209,591,290.20 × 98,809,631.60
  4. Step 4: Simplify right side
    139,972,470.80x = 20,709,638,171,230,688
  5. Step 5: Solve for x
    x = 20,709,638,171,230,688/139,972,470.80
  6. Step 6: Final answer
    x = 147,955,080.40

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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.