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Finding the Fourth Proportional to 125,800.02, 188,644.63 and 66,621.86

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Solution

The fourth proportional to 125,800.02, 188,644.63 and 66,621.86 is: 99,903.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,800.02 : 188,644.63 = 66,621.86 : x
  2. Step 2: Convert to fraction form
    125,800.02/188,644.63 = 66,621.86/x
  3. Step 3: Cross multiply
    125,800.02x = 188,644.63 × 66,621.86
  4. Step 4: Simplify right side
    125,800.02x = 12,567,856,129.61
  5. Step 5: Solve for x
    x = 12,567,856,129.61/125,800.02
  6. Step 6: Final answer
    x = 99,903.45

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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.