Home / 159,916.25-239,282.46-128,229.45

Finding the Fourth Proportional to 159,916.25, 239,282.46 and 128,229.45

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Solution

The fourth proportional to 159,916.25, 239,282.46 and 128,229.45 is: 191,869.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,916.25 : 239,282.46 = 128,229.45 : x
  2. Step 2: Convert to fraction form
    159,916.25/239,282.46 = 128,229.45/x
  3. Step 3: Cross multiply
    159,916.25x = 239,282.46 × 128,229.45
  4. Step 4: Simplify right side
    159,916.25x = 30,683,058,240.45
  5. Step 5: Solve for x
    x = 30,683,058,240.45/159,916.25
  6. Step 6: Final answer
    x = 191,869.55

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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.