Home / 154,628.87-231,362.12-91,478.79

Finding the Fourth Proportional to 154,628.87, 231,362.12 and 91,478.79

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Solution

The fourth proportional to 154,628.87, 231,362.12 and 91,478.79 is: 136,874.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,628.87 : 231,362.12 = 91,478.79 : x
  2. Step 2: Convert to fraction form
    154,628.87/231,362.12 = 91,478.79/x
  3. Step 3: Cross multiply
    154,628.87x = 231,362.12 × 91,478.79
  4. Step 4: Simplify right side
    154,628.87x = 21,164,726,332.04
  5. Step 5: Solve for x
    x = 21,164,726,332.04/154,628.87
  6. Step 6: Final answer
    x = 136,874.36

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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.