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Finding the Fourth Proportional to 203,132.45, 304,532.42 and 76,700.95

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Solution

The fourth proportional to 203,132.45, 304,532.42 and 76,700.95 is: 114,988.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,132.45 : 304,532.42 = 76,700.95 : x
  2. Step 2: Convert to fraction form
    203,132.45/304,532.42 = 76,700.95/x
  3. Step 3: Cross multiply
    203,132.45x = 304,532.42 × 76,700.95
  4. Step 4: Simplify right side
    203,132.45x = 23,357,926,170.76
  5. Step 5: Solve for x
    x = 23,357,926,170.76/203,132.45
  6. Step 6: Final answer
    x = 114,988.65

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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.