Home / 142,179.84-196,207.52-78,517.35

Finding the Fourth Proportional to 142,179.84, 196,207.52 and 78,517.35

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Solution

The fourth proportional to 142,179.84, 196,207.52 and 78,517.35 is: 108,353.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,179.84 : 196,207.52 = 78,517.35 : x
  2. Step 2: Convert to fraction form
    142,179.84/196,207.52 = 78,517.35/x
  3. Step 3: Cross multiply
    142,179.84x = 196,207.52 × 78,517.35
  4. Step 4: Simplify right side
    142,179.84x = 15,405,694,127.89
  5. Step 5: Solve for x
    x = 15,405,694,127.89/142,179.84
  6. Step 6: Final answer
    x = 108,353.58

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1.5x scale

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.