Home / 139,968,015.90-209,952,023.85-129,764,348.70

Finding the Fourth Proportional to 139,968,015.90, 209,952,023.85 and 129,764,348.70

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Solution

The fourth proportional to 139,968,015.90, 209,952,023.85 and 129,764,348.70 is: 194,646,523.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,968,015.90 : 209,952,023.85 = 129,764,348.70 : x
  2. Step 2: Convert to fraction form
    139,968,015.90/209,952,023.85 = 129,764,348.70/x
  3. Step 3: Cross multiply
    139,968,015.90x = 209,952,023.85 × 129,764,348.70
  4. Step 4: Simplify right side
    139,968,015.90x = 27,244,287,633,142,116
  5. Step 5: Solve for x
    x = 27,244,287,633,142,116/139,968,015.90
  6. Step 6: Final answer
    x = 194,646,523.05

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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.