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Finding the Fourth Proportional to 125,226.84, 172,811.16 and 68,638.32

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Solution

The fourth proportional to 125,226.84, 172,811.16 and 68,638.32 is: 94,719.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,226.84 : 172,811.16 = 68,638.32 : x
  2. Step 2: Convert to fraction form
    125,226.84/172,811.16 = 68,638.32/x
  3. Step 3: Cross multiply
    125,226.84x = 172,811.16 × 68,638.32
  4. Step 4: Simplify right side
    125,226.84x = 11,861,467,699.65
  5. Step 5: Solve for x
    x = 11,861,467,699.65/125,226.84
  6. Step 6: Final answer
    x = 94,719.85

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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.