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Finding the Fourth Proportional to 155,992.84, 215,216.70 and 127,262.44

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Solution

The fourth proportional to 155,992.84, 215,216.70 and 127,262.44 is: 175,578.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,992.84 : 215,216.70 = 127,262.44 : x
  2. Step 2: Convert to fraction form
    155,992.84/215,216.70 = 127,262.44/x
  3. Step 3: Cross multiply
    155,992.84x = 215,216.70 × 127,262.44
  4. Step 4: Simplify right side
    155,992.84x = 27,389,002,162.53
  5. Step 5: Solve for x
    x = 27,389,002,162.53/155,992.84
  6. Step 6: Final answer
    x = 175,578.59

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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.