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Finding the Fourth Proportional to 117,147.68, 175,721.49 and 28,401.20

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Solution

The fourth proportional to 117,147.68, 175,721.49 and 28,401.20 is: 42,601.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,147.68 : 175,721.49 = 28,401.20 : x
  2. Step 2: Convert to fraction form
    117,147.68/175,721.49 = 28,401.20/x
  3. Step 3: Cross multiply
    117,147.68x = 175,721.49 × 28,401.20
  4. Step 4: Simplify right side
    117,147.68x = 4,990,700,303.18
  5. Step 5: Solve for x
    x = 4,990,700,303.18/117,147.68
  6. Step 6: Final answer
    x = 42,601.79

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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.