Home / 149,875.56-206,829.18-81,891.72

Finding the Fourth Proportional to 149,875.56, 206,829.18 and 81,891.72

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Solution

The fourth proportional to 149,875.56, 206,829.18 and 81,891.72 is: 113,011.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,875.56 : 206,829.18 = 81,891.72 : x
  2. Step 2: Convert to fraction form
    149,875.56/206,829.18 = 81,891.72/x
  3. Step 3: Cross multiply
    149,875.56x = 206,829.18 × 81,891.72
  4. Step 4: Simplify right side
    149,875.56x = 16,937,597,296.39
  5. Step 5: Solve for x
    x = 16,937,597,296.39/149,875.56
  6. Step 6: Final answer
    x = 113,011.07

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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.