Home / 126,036.40-189,054.60-112,258.30

Finding the Fourth Proportional to 126,036.40, 189,054.60 and 112,258.30

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Solution

The fourth proportional to 126,036.40, 189,054.60 and 112,258.30 is: 168,387.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,036.40 : 189,054.60 = 112,258.30 : x
  2. Step 2: Convert to fraction form
    126,036.40/189,054.60 = 112,258.30/x
  3. Step 3: Cross multiply
    126,036.40x = 189,054.60 × 112,258.30
  4. Step 4: Simplify right side
    126,036.40x = 21,222,948,003.18
  5. Step 5: Solve for x
    x = 21,222,948,003.18/126,036.40
  6. Step 6: Final answer
    x = 168,387.45

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.