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Finding the Fourth Proportional to 131,800.65, 197,832.20 and 72,664.17

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Solution

The fourth proportional to 131,800.65, 197,832.20 and 72,664.17 is: 109,068.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,800.65 : 197,832.20 = 72,664.17 : x
  2. Step 2: Convert to fraction form
    131,800.65/197,832.20 = 72,664.17/x
  3. Step 3: Cross multiply
    131,800.65x = 197,832.20 × 72,664.17
  4. Step 4: Simplify right side
    131,800.65x = 14,375,312,248.95
  5. Step 5: Solve for x
    x = 14,375,312,248.95/131,800.65
  6. Step 6: Final answer
    x = 109,068.60

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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.