Home / 138,455.12-190,940.48-92,433.76

Finding the Fourth Proportional to 138,455.12, 190,940.48 and 92,433.76

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Solution

The fourth proportional to 138,455.12, 190,940.48 and 92,433.76 is: 127,473.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,455.12 : 190,940.48 = 92,433.76 : x
  2. Step 2: Convert to fraction form
    138,455.12/190,940.48 = 92,433.76/x
  3. Step 3: Cross multiply
    138,455.12x = 190,940.48 × 92,433.76
  4. Step 4: Simplify right side
    138,455.12x = 17,649,346,502.60
  5. Step 5: Solve for x
    x = 17,649,346,502.60/138,455.12
  6. Step 6: Final answer
    x = 127,473.41

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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.