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Finding the Fourth Proportional to 125,409.75, 173,065.46 and 68,821.13

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Solution

The fourth proportional to 125,409.75, 173,065.46 and 68,821.13 is: 94,973.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,409.75 : 173,065.46 = 68,821.13 : x
  2. Step 2: Convert to fraction form
    125,409.75/173,065.46 = 68,821.13/x
  3. Step 3: Cross multiply
    125,409.75x = 173,065.46 × 68,821.13
  4. Step 4: Simplify right side
    125,409.75x = 11,910,559,311.74
  5. Step 5: Solve for x
    x = 11,910,559,311.74/125,409.75
  6. Step 6: Final answer
    x = 94,973.15

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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.