Home / 145,559.35-200,857.62-81,895.78

Finding the Fourth Proportional to 145,559.35, 200,857.62 and 81,895.78

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Solution

The fourth proportional to 145,559.35, 200,857.62 and 81,895.78 is: 113,008.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,559.35 : 200,857.62 = 81,895.78 : x
  2. Step 2: Convert to fraction form
    145,559.35/200,857.62 = 81,895.78/x
  3. Step 3: Cross multiply
    145,559.35x = 200,857.62 × 81,895.78
  4. Step 4: Simplify right side
    145,559.35x = 16,449,391,458.84
  5. Step 5: Solve for x
    x = 16,449,391,458.84/145,559.35
  6. Step 6: Final answer
    x = 113,008.14

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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.