Home / 149,478.28-206,254.65-85,814.71

Finding the Fourth Proportional to 149,478.28, 206,254.65 and 85,814.71

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Solution

The fourth proportional to 149,478.28, 206,254.65 and 85,814.71 is: 118,409.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,478.28 : 206,254.65 = 85,814.71 : x
  2. Step 2: Convert to fraction form
    149,478.28/206,254.65 = 85,814.71/x
  3. Step 3: Cross multiply
    149,478.28x = 206,254.65 × 85,814.71
  4. Step 4: Simplify right side
    149,478.28x = 17,699,682,782.07
  5. Step 5: Solve for x
    x = 17,699,682,782.07/149,478.28
  6. Step 6: Final answer
    x = 118,409.73

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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.