Home / 149,686.14-206,561.73-89,225.62

Finding the Fourth Proportional to 149,686.14, 206,561.73 and 89,225.62

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Solution

The fourth proportional to 149,686.14, 206,561.73 and 89,225.62 is: 123,128.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,686.14 : 206,561.73 = 89,225.62 : x
  2. Step 2: Convert to fraction form
    149,686.14/206,561.73 = 89,225.62/x
  3. Step 3: Cross multiply
    149,686.14x = 206,561.73 × 89,225.62
  4. Step 4: Simplify right side
    149,686.14x = 18,430,597,911.12
  5. Step 5: Solve for x
    x = 18,430,597,911.12/149,686.14
  6. Step 6: Final answer
    x = 123,128.29

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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.