Home / 210,085,629.84-289,966,542.12-123,193,495.44

Finding the Fourth Proportional to 210,085,629.84, 289,966,542.12 and 123,193,495.44

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Solution

The fourth proportional to 210,085,629.84, 289,966,542.12 and 123,193,495.44 is: 170,035,389.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,085,629.84 : 289,966,542.12 = 123,193,495.44 : x
  2. Step 2: Convert to fraction form
    210,085,629.84/289,966,542.12 = 123,193,495.44/x
  3. Step 3: Cross multiply
    210,085,629.84x = 289,966,542.12 × 123,193,495.44
  4. Step 4: Simplify right side
    210,085,629.84x = 35,721,991,884,412,788
  5. Step 5: Solve for x
    x = 35,721,991,884,412,788/210,085,629.84
  6. Step 6: Final answer
    x = 170,035,389.43

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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.