Home / 149,869.06-206,816.88-81,884.58

Finding the Fourth Proportional to 149,869.06, 206,816.88 and 81,884.58

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Solution

The fourth proportional to 149,869.06, 206,816.88 and 81,884.58 is: 112,999.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,869.06 : 206,816.88 = 81,884.58 : x
  2. Step 2: Convert to fraction form
    149,869.06/206,816.88 = 81,884.58/x
  3. Step 3: Cross multiply
    149,869.06x = 206,816.88 × 81,884.58
  4. Step 4: Simplify right side
    149,869.06x = 16,935,113,355.71
  5. Step 5: Solve for x
    x = 16,935,113,355.71/149,869.06
  6. Step 6: Final answer
    x = 112,999.40

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1.5x scale

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.