Home / 149,255.11-205,966.87-81,271

Finding the Fourth Proportional to 149,255.11, 205,966.87 and 81,271

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Solution

The fourth proportional to 149,255.11, 205,966.87 and 81,271 is: 112,151.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,255.11 : 205,966.87 = 81,271 : x
  2. Step 2: Convert to fraction form
    149,255.11/205,966.87 = 81,271/x
  3. Step 3: Cross multiply
    149,255.11x = 205,966.87 × 81,271
  4. Step 4: Simplify right side
    149,255.11x = 16,739,133,491.77
  5. Step 5: Solve for x
    x = 16,739,133,491.77/149,255.11
  6. Step 6: Final answer
    x = 112,151.16

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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.