Home / 142,786.08-197,042.48-79,123.68

Finding the Fourth Proportional to 142,786.08, 197,042.48 and 79,123.68

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Solution

The fourth proportional to 142,786.08, 197,042.48 and 79,123.68 is: 109,189.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,786.08 : 197,042.48 = 79,123.68 : x
  2. Step 2: Convert to fraction form
    142,786.08/197,042.48 = 79,123.68/x
  3. Step 3: Cross multiply
    142,786.08x = 197,042.48 × 79,123.68
  4. Step 4: Simplify right side
    142,786.08x = 15,590,726,133.93
  5. Step 5: Solve for x
    x = 15,590,726,133.93/142,786.08
  6. Step 6: Final answer
    x = 109,189.40

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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.