Home / 149,188.37-205,885.38-81,202.06

Finding the Fourth Proportional to 149,188.37, 205,885.38 and 81,202.06

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Solution

The fourth proportional to 149,188.37, 205,885.38 and 81,202.06 is: 112,061.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,188.37 : 205,885.38 = 81,202.06 : x
  2. Step 2: Convert to fraction form
    149,188.37/205,885.38 = 81,202.06/x
  3. Step 3: Cross multiply
    149,188.37x = 205,885.38 × 81,202.06
  4. Step 4: Simplify right side
    149,188.37x = 16,718,316,769.68
  5. Step 5: Solve for x
    x = 16,718,316,769.68/149,188.37
  6. Step 6: Final answer
    x = 112,061.80

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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.