Home / 154,358.28-213,007.19-86,383.89

Finding the Fourth Proportional to 154,358.28, 213,007.19 and 86,383.89

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Solution

The fourth proportional to 154,358.28, 213,007.19 and 86,383.89 is: 119,205.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,358.28 : 213,007.19 = 86,383.89 : x
  2. Step 2: Convert to fraction form
    154,358.28/213,007.19 = 86,383.89/x
  3. Step 3: Cross multiply
    154,358.28x = 213,007.19 × 86,383.89
  4. Step 4: Simplify right side
    154,358.28x = 18,400,389,238.25
  5. Step 5: Solve for x
    x = 18,400,389,238.25/154,358.28
  6. Step 6: Final answer
    x = 119,205.72

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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.