Home / 138,215.22-190,752.48-77,800.56

Finding the Fourth Proportional to 138,215.22, 190,752.48 and 77,800.56

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Solution

The fourth proportional to 138,215.22, 190,752.48 and 77,800.56 is: 107,373.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,215.22 : 190,752.48 = 77,800.56 : x
  2. Step 2: Convert to fraction form
    138,215.22/190,752.48 = 77,800.56/x
  3. Step 3: Cross multiply
    138,215.22x = 190,752.48 × 77,800.56
  4. Step 4: Simplify right side
    138,215.22x = 14,840,649,765.39
  5. Step 5: Solve for x
    x = 14,840,649,765.39/138,215.22
  6. Step 6: Final answer
    x = 107,373.48

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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.