Home / 142,274.07-196,342.18-78,615.97

Finding the Fourth Proportional to 142,274.07, 196,342.18 and 78,615.97

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Solution

The fourth proportional to 142,274.07, 196,342.18 and 78,615.97 is: 108,492.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,274.07 : 196,342.18 = 78,615.97 : x
  2. Step 2: Convert to fraction form
    142,274.07/196,342.18 = 78,615.97/x
  3. Step 3: Cross multiply
    142,274.07x = 196,342.18 × 78,615.97
  4. Step 4: Simplify right side
    142,274.07x = 15,435,630,245.22
  5. Step 5: Solve for x
    x = 15,435,630,245.22/142,274.07
  6. Step 6: Final answer
    x = 108,492.22

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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.