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Finding the Fourth Proportional to 120,208.95, 180,154.15 and 63,927.88

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Solution

The fourth proportional to 120,208.95, 180,154.15 and 63,927.88 is: 95,807.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,208.95 : 180,154.15 = 63,927.88 : x
  2. Step 2: Convert to fraction form
    120,208.95/180,154.15 = 63,927.88/x
  3. Step 3: Cross multiply
    120,208.95x = 180,154.15 × 63,927.88
  4. Step 4: Simplify right side
    120,208.95x = 11,516,872,882.70
  5. Step 5: Solve for x
    x = 11,516,872,882.70/120,208.95
  6. Step 6: Final answer
    x = 95,807.12

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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.