Home / 138,269.32-190,799.41-77,010.84

Finding the Fourth Proportional to 138,269.32, 190,799.41 and 77,010.84

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Solution

The fourth proportional to 138,269.32, 190,799.41 and 77,010.84 is: 106,268.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,269.32 : 190,799.41 = 77,010.84 : x
  2. Step 2: Convert to fraction form
    138,269.32/190,799.41 = 77,010.84/x
  3. Step 3: Cross multiply
    138,269.32x = 190,799.41 × 77,010.84
  4. Step 4: Simplify right side
    138,269.32x = 14,693,622,835.60
  5. Step 5: Solve for x
    x = 14,693,622,835.60/138,269.32
  6. Step 6: Final answer
    x = 106,268.14

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1.5x scale

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.