Home / 142,654.46-196,863.12-78,992.24

Finding the Fourth Proportional to 142,654.46, 196,863.12 and 78,992.24

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Solution

The fourth proportional to 142,654.46, 196,863.12 and 78,992.24 is: 109,009.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,654.46 : 196,863.12 = 78,992.24 : x
  2. Step 2: Convert to fraction form
    142,654.46/196,863.12 = 78,992.24/x
  3. Step 3: Cross multiply
    142,654.46x = 196,863.12 × 78,992.24
  4. Step 4: Simplify right side
    142,654.46x = 15,550,658,822.19
  5. Step 5: Solve for x
    x = 15,550,658,822.19/142,654.46
  6. Step 6: Final answer
    x = 109,009.27

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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.