Home / 142,028.76-212,840.07-104,292.78

Finding the Fourth Proportional to 142,028.76, 212,840.07 and 104,292.78

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Solution

The fourth proportional to 142,028.76, 212,840.07 and 104,292.78 is: 156,290.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,028.76 : 212,840.07 = 104,292.78 : x
  2. Step 2: Convert to fraction form
    142,028.76/212,840.07 = 104,292.78/x
  3. Step 3: Cross multiply
    142,028.76x = 212,840.07 × 104,292.78
  4. Step 4: Simplify right side
    142,028.76x = 22,197,682,595.69
  5. Step 5: Solve for x
    x = 22,197,682,595.69/142,028.76
  6. Step 6: Final answer
    x = 156,290.05

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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.