Home / 143,314.90-214,972.35-90,783.70

Finding the Fourth Proportional to 143,314.90, 214,972.35 and 90,783.70

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Solution

The fourth proportional to 143,314.90, 214,972.35 and 90,783.70 is: 136,175.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,314.90 : 214,972.35 = 90,783.70 : x
  2. Step 2: Convert to fraction form
    143,314.90/214,972.35 = 90,783.70/x
  3. Step 3: Cross multiply
    143,314.90x = 214,972.35 × 90,783.70
  4. Step 4: Simplify right side
    143,314.90x = 19,515,985,330.70
  5. Step 5: Solve for x
    x = 19,515,985,330.70/143,314.90
  6. Step 6: Final answer
    x = 136,175.55

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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.