Home / 126,828.80-189,854.40-74,081.60

Finding the Fourth Proportional to 126,828.80, 189,854.40 and 74,081.60

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Solution

The fourth proportional to 126,828.80, 189,854.40 and 74,081.60 is: 110,895.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,828.80 : 189,854.40 = 74,081.60 : x
  2. Step 2: Convert to fraction form
    126,828.80/189,854.40 = 74,081.60/x
  3. Step 3: Cross multiply
    126,828.80x = 189,854.40 × 74,081.60
  4. Step 4: Simplify right side
    126,828.80x = 14,064,717,719.04
  5. Step 5: Solve for x
    x = 14,064,717,719.04/126,828.80
  6. Step 6: Final answer
    x = 110,895.30

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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.