Home / 143,829.05-215,805.90-77,191.37

Finding the Fourth Proportional to 143,829.05, 215,805.90 and 77,191.37

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Solution

The fourth proportional to 143,829.05, 215,805.90 and 77,191.37 is: 115,820.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,829.05 : 215,805.90 = 77,191.37 : x
  2. Step 2: Convert to fraction form
    143,829.05/215,805.90 = 77,191.37/x
  3. Step 3: Cross multiply
    143,829.05x = 215,805.90 × 77,191.37
  4. Step 4: Simplify right side
    143,829.05x = 16,658,351,996.05
  5. Step 5: Solve for x
    x = 16,658,351,996.05/143,829.05
  6. Step 6: Final answer
    x = 115,820.50

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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.