Home / 142,663.44-196,873.92-78,999.60

Finding the Fourth Proportional to 142,663.44, 196,873.92 and 78,999.60

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Solution

The fourth proportional to 142,663.44, 196,873.92 and 78,999.60 is: 109,018.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,663.44 : 196,873.92 = 78,999.60 : x
  2. Step 2: Convert to fraction form
    142,663.44/196,873.92 = 78,999.60/x
  3. Step 3: Cross multiply
    142,663.44x = 196,873.92 × 78,999.60
  4. Step 4: Simplify right side
    142,663.44x = 15,552,960,930.43
  5. Step 5: Solve for x
    x = 15,552,960,930.43/142,663.44
  6. Step 6: Final answer
    x = 109,018.55

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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.