Home / 149,782.58-206,700.05-81,800.50

Finding the Fourth Proportional to 149,782.58, 206,700.05 and 81,800.50

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Solution

The fourth proportional to 149,782.58, 206,700.05 and 81,800.50 is: 112,884.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,782.58 : 206,700.05 = 81,800.50 : x
  2. Step 2: Convert to fraction form
    149,782.58/206,700.05 = 81,800.50/x
  3. Step 3: Cross multiply
    149,782.58x = 206,700.05 × 81,800.50
  4. Step 4: Simplify right side
    149,782.58x = 16,908,167,440.03
  5. Step 5: Solve for x
    x = 16,908,167,440.03/149,782.58
  6. Step 6: Final answer
    x = 112,884.74

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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.