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Finding the Fourth Proportional to 125,396.79, 173,047.10 and 68,809.11

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Solution

The fourth proportional to 125,396.79, 173,047.10 and 68,809.11 is: 94,956.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,396.79 : 173,047.10 = 68,809.11 : x
  2. Step 2: Convert to fraction form
    125,396.79/173,047.10 = 68,809.11/x
  3. Step 3: Cross multiply
    125,396.79x = 173,047.10 × 68,809.11
  4. Step 4: Simplify right side
    125,396.79x = 11,907,216,595.04
  5. Step 5: Solve for x
    x = 11,907,216,595.04/125,396.79
  6. Step 6: Final answer
    x = 94,956.31

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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.