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Finding the Fourth Proportional to 125,112.72, 172,651.84 and 68,522.88

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Solution

The fourth proportional to 125,112.72, 172,651.84 and 68,522.88 is: 94,559.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,112.72 : 172,651.84 = 68,522.88 : x
  2. Step 2: Convert to fraction form
    125,112.72/172,651.84 = 68,522.88/x
  3. Step 3: Cross multiply
    125,112.72x = 172,651.84 × 68,522.88
  4. Step 4: Simplify right side
    125,112.72x = 11,830,601,314.10
  5. Step 5: Solve for x
    x = 11,830,601,314.10/125,112.72
  6. Step 6: Final answer
    x = 94,559.54

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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.