Home / 159,923.79-239,293.71-128,236.95

Finding the Fourth Proportional to 159,923.79, 239,293.71 and 128,236.95

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Solution

The fourth proportional to 159,923.79, 239,293.71 and 128,236.95 is: 191,880.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,923.79 : 239,293.71 = 128,236.95 : x
  2. Step 2: Convert to fraction form
    159,923.79/239,293.71 = 128,236.95/x
  3. Step 3: Cross multiply
    159,923.79x = 239,293.71 × 128,236.95
  4. Step 4: Simplify right side
    159,923.79x = 30,686,295,524.58
  5. Step 5: Solve for x
    x = 30,686,295,524.58/159,923.79
  6. Step 6: Final answer
    x = 191,880.74

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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.