Home / 149,177.79-205,869.71-81,199.15

Finding the Fourth Proportional to 149,177.79, 205,869.71 and 81,199.15

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Solution

The fourth proportional to 149,177.79, 205,869.71 and 81,199.15 is: 112,057.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,177.79 : 205,869.71 = 81,199.15 : x
  2. Step 2: Convert to fraction form
    149,177.79/205,869.71 = 81,199.15/x
  3. Step 3: Cross multiply
    149,177.79x = 205,869.71 × 81,199.15
  4. Step 4: Simplify right side
    149,177.79x = 16,716,444,027.40
  5. Step 5: Solve for x
    x = 16,716,444,027.40/149,177.79
  6. Step 6: Final answer
    x = 112,057.19

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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.