Home / 143,243.10-214,907.85-76,715.10

Finding the Fourth Proportional to 143,243.10, 214,907.85 and 76,715.10

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Solution

The fourth proportional to 143,243.10, 214,907.85 and 76,715.10 is: 115,095.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,243.10 : 214,907.85 = 76,715.10 : x
  2. Step 2: Convert to fraction form
    143,243.10/214,907.85 = 76,715.10/x
  3. Step 3: Cross multiply
    143,243.10x = 214,907.85 × 76,715.10
  4. Step 4: Simplify right side
    143,243.10x = 16,486,677,203.54
  5. Step 5: Solve for x
    x = 16,486,677,203.54/143,243.10
  6. Step 6: Final answer
    x = 115,095.79

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1.5x scale

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.