Home / 149,046,866.52-205,682,568.78-83,856,615

Finding the Fourth Proportional to 149,046,866.52, 205,682,568.78 and 83,856,615

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Solution

The fourth proportional to 149,046,866.52, 205,682,568.78 and 83,856,615 is: 115,720,943.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,046,866.52 : 205,682,568.78 = 83,856,615 : x
  2. Step 2: Convert to fraction form
    149,046,866.52/205,682,568.78 = 83,856,615/x
  3. Step 3: Cross multiply
    149,046,866.52x = 205,682,568.78 × 83,856,615
  4. Step 4: Simplify right side
    149,046,866.52x = 17,247,843,982,395,480
  5. Step 5: Solve for x
    x = 17,247,843,982,395,480/149,046,866.52
  6. Step 6: Final answer
    x = 115,720,943.25

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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.