Home / 138,340.36-190,854.25-84,531.95

Finding the Fourth Proportional to 138,340.36, 190,854.25 and 84,531.95

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Solution

The fourth proportional to 138,340.36, 190,854.25 and 84,531.95 is: 116,620.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,340.36 : 190,854.25 = 84,531.95 : x
  2. Step 2: Convert to fraction form
    138,340.36/190,854.25 = 84,531.95/x
  3. Step 3: Cross multiply
    138,340.36x = 190,854.25 × 84,531.95
  4. Step 4: Simplify right side
    138,340.36x = 16,133,282,779.69
  5. Step 5: Solve for x
    x = 16,133,282,779.69/138,340.36
  6. Step 6: Final answer
    x = 116,620.22

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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.