Home / 154,828.80-213,662.85-85,917.57

Finding the Fourth Proportional to 154,828.80, 213,662.85 and 85,917.57

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Solution

The fourth proportional to 154,828.80, 213,662.85 and 85,917.57 is: 118,565.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,828.80 : 213,662.85 = 85,917.57 : x
  2. Step 2: Convert to fraction form
    154,828.80/213,662.85 = 85,917.57/x
  3. Step 3: Cross multiply
    154,828.80x = 213,662.85 × 85,917.57
  4. Step 4: Simplify right side
    154,828.80x = 18,357,392,871.27
  5. Step 5: Solve for x
    x = 18,357,392,871.27/154,828.80
  6. Step 6: Final answer
    x = 118,565.75

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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.