Home / 261,026.40-391,539.60-128,166.15

Finding the Fourth Proportional to 261,026.40, 391,539.60 and 128,166.15

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Solution

The fourth proportional to 261,026.40, 391,539.60 and 128,166.15 is: 192,249.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,026.40 : 391,539.60 = 128,166.15 : x
  2. Step 2: Convert to fraction form
    261,026.40/391,539.60 = 128,166.15/x
  3. Step 3: Cross multiply
    261,026.40x = 391,539.60 × 128,166.15
  4. Step 4: Simplify right side
    261,026.40x = 50,182,123,104.54
  5. Step 5: Solve for x
    x = 50,182,123,104.54/261,026.40
  6. Step 6: Final answer
    x = 192,249.23

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.