Home / 143,322.40-197,787.43-78,794.35

Finding the Fourth Proportional to 143,322.40, 197,787.43 and 78,794.35

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Solution

The fourth proportional to 143,322.40, 197,787.43 and 78,794.35 is: 108,737.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,322.40 : 197,787.43 = 78,794.35 : x
  2. Step 2: Convert to fraction form
    143,322.40/197,787.43 = 78,794.35/x
  3. Step 3: Cross multiply
    143,322.40x = 197,787.43 × 78,794.35
  4. Step 4: Simplify right side
    143,322.40x = 15,584,532,479.99
  5. Step 5: Solve for x
    x = 15,584,532,479.99/143,322.40
  6. Step 6: Final answer
    x = 108,737.59

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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.