Home / 143,223.54-214,966.59-76,738.74

Finding the Fourth Proportional to 143,223.54, 214,966.59 and 76,738.74

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Solution

The fourth proportional to 143,223.54, 214,966.59 and 76,738.74 is: 115,178.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,223.54 : 214,966.59 = 76,738.74 : x
  2. Step 2: Convert to fraction form
    143,223.54/214,966.59 = 76,738.74/x
  3. Step 3: Cross multiply
    143,223.54x = 214,966.59 × 76,738.74
  4. Step 4: Simplify right side
    143,223.54x = 16,496,265,258.70
  5. Step 5: Solve for x
    x = 16,496,265,258.70/143,223.54
  6. Step 6: Final answer
    x = 115,178.45

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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.