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Finding the Fourth Proportional to 201,345.95, 301,830.30 and 68,132.95

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Solution

The fourth proportional to 201,345.95, 301,830.30 and 68,132.95 is: 102,135.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,345.95 : 301,830.30 = 68,132.95 : x
  2. Step 2: Convert to fraction form
    201,345.95/301,830.30 = 68,132.95/x
  3. Step 3: Cross multiply
    201,345.95x = 301,830.30 × 68,132.95
  4. Step 4: Simplify right side
    201,345.95x = 20,564,587,983.81
  5. Step 5: Solve for x
    x = 20,564,587,983.81/201,345.95
  6. Step 6: Final answer
    x = 102,135.59

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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.