Home / 138,229.12-190,848-106,341.76

Finding the Fourth Proportional to 138,229.12, 190,848 and 106,341.76

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Solution

The fourth proportional to 138,229.12, 190,848 and 106,341.76 is: 146,822.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,229.12 : 190,848 = 106,341.76 : x
  2. Step 2: Convert to fraction form
    138,229.12/190,848 = 106,341.76/x
  3. Step 3: Cross multiply
    138,229.12x = 190,848 × 106,341.76
  4. Step 4: Simplify right side
    138,229.12x = 20,295,112,212.48
  5. Step 5: Solve for x
    x = 20,295,112,212.48/138,229.12
  6. Step 6: Final answer
    x = 146,822.26

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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.