Home / 142,021.26-212,828.85-104,285.25

Finding the Fourth Proportional to 142,021.26, 212,828.85 and 104,285.25

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Solution

The fourth proportional to 142,021.26, 212,828.85 and 104,285.25 is: 156,278.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,021.26 : 212,828.85 = 104,285.25 : x
  2. Step 2: Convert to fraction form
    142,021.26/212,828.85 = 104,285.25/x
  3. Step 3: Cross multiply
    142,021.26x = 212,828.85 × 104,285.25
  4. Step 4: Simplify right side
    142,021.26x = 22,194,909,829.46
  5. Step 5: Solve for x
    x = 22,194,909,829.46/142,021.26
  6. Step 6: Final answer
    x = 156,278.78

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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.