Home / 142,686.09-196,918.02-79,029.81

Finding the Fourth Proportional to 142,686.09, 196,918.02 and 79,029.81

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Solution

The fourth proportional to 142,686.09, 196,918.02 and 79,029.81 is: 109,067.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,686.09 : 196,918.02 = 79,029.81 : x
  2. Step 2: Convert to fraction form
    142,686.09/196,918.02 = 79,029.81/x
  3. Step 3: Cross multiply
    142,686.09x = 196,918.02 × 79,029.81
  4. Step 4: Simplify right side
    142,686.09x = 15,562,393,706.18
  5. Step 5: Solve for x
    x = 15,562,393,706.18/142,686.09
  6. Step 6: Final answer
    x = 109,067.35

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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.