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Finding the Fourth Proportional to 125,998.41, 173,869.54 and 69,409.78

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Solution

The fourth proportional to 125,998.41, 173,869.54 and 69,409.78 is: 95,780.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,998.41 : 173,869.54 = 69,409.78 : x
  2. Step 2: Convert to fraction form
    125,998.41/173,869.54 = 69,409.78/x
  3. Step 3: Cross multiply
    125,998.41x = 173,869.54 × 69,409.78
  4. Step 4: Simplify right side
    125,998.41x = 12,068,246,520.10
  5. Step 5: Solve for x
    x = 12,068,246,520.10/125,998.41
  6. Step 6: Final answer
    x = 95,780.94

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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.