Home / 138,125.54-190,559.26-77,682.32

Finding the Fourth Proportional to 138,125.54, 190,559.26 and 77,682.32

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Solution

The fourth proportional to 138,125.54, 190,559.26 and 77,682.32 is: 107,171.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,125.54 : 190,559.26 = 77,682.32 : x
  2. Step 2: Convert to fraction form
    138,125.54/190,559.26 = 77,682.32/x
  3. Step 3: Cross multiply
    138,125.54x = 190,559.26 × 77,682.32
  4. Step 4: Simplify right side
    138,125.54x = 14,803,085,414.28
  5. Step 5: Solve for x
    x = 14,803,085,414.28/138,125.54
  6. Step 6: Final answer
    x = 107,171.24

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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.