Home / 138,204.80-190,726.38-77,777.60

Finding the Fourth Proportional to 138,204.80, 190,726.38 and 77,777.60

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Solution

The fourth proportional to 138,204.80, 190,726.38 and 77,777.60 is: 107,335.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,204.80 : 190,726.38 = 77,777.60 : x
  2. Step 2: Convert to fraction form
    138,204.80/190,726.38 = 77,777.60/x
  3. Step 3: Cross multiply
    138,204.80x = 190,726.38 × 77,777.60
  4. Step 4: Simplify right side
    138,204.80x = 14,834,240,093.09
  5. Step 5: Solve for x
    x = 14,834,240,093.09/138,204.80
  6. Step 6: Final answer
    x = 107,335.20

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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.