Home / 142,786.94-197,041.02-79,130.66

Finding the Fourth Proportional to 142,786.94, 197,041.02 and 79,130.66

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Solution

The fourth proportional to 142,786.94, 197,041.02 and 79,130.66 is: 109,197.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,786.94 : 197,041.02 = 79,130.66 : x
  2. Step 2: Convert to fraction form
    142,786.94/197,041.02 = 79,130.66/x
  3. Step 3: Cross multiply
    142,786.94x = 197,041.02 × 79,130.66
  4. Step 4: Simplify right side
    142,786.94x = 15,591,985,959.67
  5. Step 5: Solve for x
    x = 15,591,985,959.67/142,786.94
  6. Step 6: Final answer
    x = 109,197.56

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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.