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Finding the Fourth Proportional to 188,412.15, 259,943.33 and 120,468.90

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Solution

The fourth proportional to 188,412.15, 259,943.33 and 120,468.90 is: 166,205.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,412.15 : 259,943.33 = 120,468.90 : x
  2. Step 2: Convert to fraction form
    188,412.15/259,943.33 = 120,468.90/x
  3. Step 3: Cross multiply
    188,412.15x = 259,943.33 × 120,468.90
  4. Step 4: Simplify right side
    188,412.15x = 31,315,087,328.61
  5. Step 5: Solve for x
    x = 31,315,087,328.61/188,412.15
  6. Step 6: Final answer
    x = 166,205.24

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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.