Home / 149,192.73-205,886.34-81,209.70

Finding the Fourth Proportional to 149,192.73, 205,886.34 and 81,209.70

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Solution

The fourth proportional to 149,192.73, 205,886.34 and 81,209.70 is: 112,069.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,192.73 : 205,886.34 = 81,209.70 : x
  2. Step 2: Convert to fraction form
    149,192.73/205,886.34 = 81,209.70/x
  3. Step 3: Cross multiply
    149,192.73x = 205,886.34 × 81,209.70
  4. Step 4: Simplify right side
    149,192.73x = 16,719,967,905.50
  5. Step 5: Solve for x
    x = 16,719,967,905.50/149,192.73
  6. Step 6: Final answer
    x = 112,069.59

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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.