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Finding the Fourth Proportional to 125,879.30, 188,818.95 and 42,773.30

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Solution

The fourth proportional to 125,879.30, 188,818.95 and 42,773.30 is: 64,159.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,879.30 : 188,818.95 = 42,773.30 : x
  2. Step 2: Convert to fraction form
    125,879.30/188,818.95 = 42,773.30/x
  3. Step 3: Cross multiply
    125,879.30x = 188,818.95 × 42,773.30
  4. Step 4: Simplify right side
    125,879.30x = 8,076,408,649.94
  5. Step 5: Solve for x
    x = 8,076,408,649.94/125,879.30
  6. Step 6: Final answer
    x = 64,159.95

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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.