Home / 138,145.58-190,640.60-77,716.26

Finding the Fourth Proportional to 138,145.58, 190,640.60 and 77,716.26

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Solution

The fourth proportional to 138,145.58, 190,640.60 and 77,716.26 is: 107,248.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,145.58 : 190,640.60 = 77,716.26 : x
  2. Step 2: Convert to fraction form
    138,145.58/190,640.60 = 77,716.26/x
  3. Step 3: Cross multiply
    138,145.58x = 190,640.60 × 77,716.26
  4. Step 4: Simplify right side
    138,145.58x = 14,815,874,436.16
  5. Step 5: Solve for x
    x = 14,815,874,436.16/138,145.58
  6. Step 6: Final answer
    x = 107,248.27

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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.