Home / 149,775.48-206,673.12-86,133.78

Finding the Fourth Proportional to 149,775.48, 206,673.12 and 86,133.78

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Solution

The fourth proportional to 149,775.48, 206,673.12 and 86,133.78 is: 118,854.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,775.48 : 206,673.12 = 86,133.78 : x
  2. Step 2: Convert to fraction form
    149,775.48/206,673.12 = 86,133.78/x
  3. Step 3: Cross multiply
    149,775.48x = 206,673.12 × 86,133.78
  4. Step 4: Simplify right side
    149,775.48x = 17,801,537,049.99
  5. Step 5: Solve for x
    x = 17,801,537,049.99/149,775.48
  6. Step 6: Final answer
    x = 118,854.82

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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.