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Finding the Fourth Proportional to 137,239,541.40, 206,018,744.40 and 82,713,694.80

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Solution

The fourth proportional to 137,239,541.40, 206,018,744.40 and 82,713,694.80 is: 124,166,631.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,239,541.40 : 206,018,744.40 = 82,713,694.80 : x
  2. Step 2: Convert to fraction form
    137,239,541.40/206,018,744.40 = 82,713,694.80/x
  3. Step 3: Cross multiply
    137,239,541.40x = 206,018,744.40 × 82,713,694.80
  4. Step 4: Simplify right side
    137,239,541.40x = 17,040,571,547,380,808
  5. Step 5: Solve for x
    x = 17,040,571,547,380,808/137,239,541.40
  6. Step 6: Final answer
    x = 124,166,631.38

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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.