Home / 136,421.36-188,258.64-75,991.92

Finding the Fourth Proportional to 136,421.36, 188,258.64 and 75,991.92

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Solution

The fourth proportional to 136,421.36, 188,258.64 and 75,991.92 is: 104,867.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,421.36 : 188,258.64 = 75,991.92 : x
  2. Step 2: Convert to fraction form
    136,421.36/188,258.64 = 75,991.92/x
  3. Step 3: Cross multiply
    136,421.36x = 188,258.64 × 75,991.92
  4. Step 4: Simplify right side
    136,421.36x = 14,306,135,510.19
  5. Step 5: Solve for x
    x = 14,306,135,510.19/136,421.36
  6. Step 6: Final answer
    x = 104,867.27

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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.