Home / 139,969,345.20-209,954,017.80-127,428,212.40

Finding the Fourth Proportional to 139,969,345.20, 209,954,017.80 and 127,428,212.40

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Solution

The fourth proportional to 139,969,345.20, 209,954,017.80 and 127,428,212.40 is: 191,142,318.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,969,345.20 : 209,954,017.80 = 127,428,212.40 : x
  2. Step 2: Convert to fraction form
    139,969,345.20/209,954,017.80 = 127,428,212.40/x
  3. Step 3: Cross multiply
    139,969,345.20x = 209,954,017.80 × 127,428,212.40
  4. Step 4: Simplify right side
    139,969,345.20x = 26,754,065,174,451,784
  5. Step 5: Solve for x
    x = 26,754,065,174,451,784/139,969,345.20
  6. Step 6: Final answer
    x = 191,142,318.60

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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.