Home / 149,199.42-205,897.82-81,218.35

Finding the Fourth Proportional to 149,199.42, 205,897.82 and 81,218.35

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Solution

The fourth proportional to 149,199.42, 205,897.82 and 81,218.35 is: 112,082.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,199.42 : 205,897.82 = 81,218.35 : x
  2. Step 2: Convert to fraction form
    149,199.42/205,897.82 = 81,218.35/x
  3. Step 3: Cross multiply
    149,199.42x = 205,897.82 × 81,218.35
  4. Step 4: Simplify right side
    149,199.42x = 16,722,681,209.00
  5. Step 5: Solve for x
    x = 16,722,681,209.00/149,199.42
  6. Step 6: Final answer
    x = 112,082.75

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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.