Home / 139,639,071.61-192,701,918.07-80,935,787.28

Finding the Fourth Proportional to 139,639,071.61, 192,701,918.07 and 80,935,787.28

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Solution

The fourth proportional to 139,639,071.61, 192,701,918.07 and 80,935,787.28 is: 111,691,386.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,639,071.61 : 192,701,918.07 = 80,935,787.28 : x
  2. Step 2: Convert to fraction form
    139,639,071.61/192,701,918.07 = 80,935,787.28/x
  3. Step 3: Cross multiply
    139,639,071.61x = 192,701,918.07 × 80,935,787.28
  4. Step 4: Simplify right side
    139,639,071.61x = 15,596,481,448,400,660
  5. Step 5: Solve for x
    x = 15,596,481,448,400,660/139,639,071.61
  6. Step 6: Final answer
    x = 111,691,386.00

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.