Home / 139,743,984.60-209,458,512.90-66,995,616.60

Finding the Fourth Proportional to 139,743,984.60, 209,458,512.90 and 66,995,616.60

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Solution

The fourth proportional to 139,743,984.60, 209,458,512.90 and 66,995,616.60 is: 100,417,934.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,743,984.60 : 209,458,512.90 = 66,995,616.60 : x
  2. Step 2: Convert to fraction form
    139,743,984.60/209,458,512.90 = 66,995,616.60/x
  3. Step 3: Cross multiply
    139,743,984.60x = 209,458,512.90 × 66,995,616.60
  4. Step 4: Simplify right side
    139,743,984.60x = 14,032,802,223,854,554
  5. Step 5: Solve for x
    x = 14,032,802,223,854,554/139,743,984.60
  6. Step 6: Final answer
    x = 100,417,934.01

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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.