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Finding the Fourth Proportional to 125,999.78, 173,879.61 and 69,411.15

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Solution

The fourth proportional to 125,999.78, 173,879.61 and 69,411.15 is: 95,787.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,999.78 : 173,879.61 = 69,411.15 : x
  2. Step 2: Convert to fraction form
    125,999.78/173,879.61 = 69,411.15/x
  3. Step 3: Cross multiply
    125,999.78x = 173,879.61 × 69,411.15
  4. Step 4: Simplify right side
    125,999.78x = 12,069,183,821.80
  5. Step 5: Solve for x
    x = 12,069,183,821.80/125,999.78
  6. Step 6: Final answer
    x = 95,787.34

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1.5x scale

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.