Home / 149,812.09-206,740.46-81,829.07

Finding the Fourth Proportional to 149,812.09, 206,740.46 and 81,829.07

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Solution

The fourth proportional to 149,812.09, 206,740.46 and 81,829.07 is: 112,923.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,812.09 : 206,740.46 = 81,829.07 : x
  2. Step 2: Convert to fraction form
    149,812.09/206,740.46 = 81,829.07/x
  3. Step 3: Cross multiply
    149,812.09x = 206,740.46 × 81,829.07
  4. Step 4: Simplify right side
    149,812.09x = 16,917,378,362.50
  5. Step 5: Solve for x
    x = 16,917,378,362.50/149,812.09
  6. Step 6: Final answer
    x = 112,923.98

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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.