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Finding the Fourth Proportional to 131,310.01, 180,989.94 and 93,020.50

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Solution

The fourth proportional to 131,310.01, 180,989.94 and 93,020.50 is: 128,213.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,310.01 : 180,989.94 = 93,020.50 : x
  2. Step 2: Convert to fraction form
    131,310.01/180,989.94 = 93,020.50/x
  3. Step 3: Cross multiply
    131,310.01x = 180,989.94 × 93,020.50
  4. Step 4: Simplify right side
    131,310.01x = 16,835,775,288.83
  5. Step 5: Solve for x
    x = 16,835,775,288.83/131,310.01
  6. Step 6: Final answer
    x = 128,213.95

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.