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Finding the Fourth Proportional to 102,750.30, 154,125.45 and 28,868.70

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Solution

The fourth proportional to 102,750.30, 154,125.45 and 28,868.70 is: 43,303.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,750.30 : 154,125.45 = 28,868.70 : x
  2. Step 2: Convert to fraction form
    102,750.30/154,125.45 = 28,868.70/x
  3. Step 3: Cross multiply
    102,750.30x = 154,125.45 × 28,868.70
  4. Step 4: Simplify right side
    102,750.30x = 4,449,401,378.42
  5. Step 5: Solve for x
    x = 4,449,401,378.42/102,750.30
  6. Step 6: Final answer
    x = 43,303.05

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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.