Home / 142,425.90-196,551.54-78,766.02

Finding the Fourth Proportional to 142,425.90, 196,551.54 and 78,766.02

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Solution

The fourth proportional to 142,425.90, 196,551.54 and 78,766.02 is: 108,699.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,425.90 : 196,551.54 = 78,766.02 : x
  2. Step 2: Convert to fraction form
    142,425.90/196,551.54 = 78,766.02/x
  3. Step 3: Cross multiply
    142,425.90x = 196,551.54 × 78,766.02
  4. Step 4: Simplify right side
    142,425.90x = 15,481,582,530.67
  5. Step 5: Solve for x
    x = 15,481,582,530.67/142,425.90
  6. Step 6: Final answer
    x = 108,699.21

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.