Home / 131,701.21-181,747.66-71,271.85

Finding the Fourth Proportional to 131,701.21, 181,747.66 and 71,271.85

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Solution

The fourth proportional to 131,701.21, 181,747.66 and 71,271.85 is: 98,355.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,701.21 : 181,747.66 = 71,271.85 : x
  2. Step 2: Convert to fraction form
    131,701.21/181,747.66 = 71,271.85/x
  3. Step 3: Cross multiply
    131,701.21x = 181,747.66 × 71,271.85
  4. Step 4: Simplify right side
    131,701.21x = 12,953,491,602.78
  5. Step 5: Solve for x
    x = 12,953,491,602.78/131,701.21
  6. Step 6: Final answer
    x = 98,355.15

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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.