Home / 139,969,344.20-209,954,016.30-127,428,211.40

Finding the Fourth Proportional to 139,969,344.20, 209,954,016.30 and 127,428,211.40

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Solution

The fourth proportional to 139,969,344.20, 209,954,016.30 and 127,428,211.40 is: 191,142,317.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,969,344.20 : 209,954,016.30 = 127,428,211.40 : x
  2. Step 2: Convert to fraction form
    139,969,344.20/209,954,016.30 = 127,428,211.40/x
  3. Step 3: Cross multiply
    139,969,344.20x = 209,954,016.30 × 127,428,211.40
  4. Step 4: Simplify right side
    139,969,344.20x = 26,754,064,773,355,448
  5. Step 5: Solve for x
    x = 26,754,064,773,355,448/139,969,344.20
  6. Step 6: Final answer
    x = 191,142,317.10

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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.