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Finding the Fourth Proportional to 125,113.12, 172,653.60 and 68,524

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Solution

The fourth proportional to 125,113.12, 172,653.60 and 68,524 is: 94,561.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,113.12 : 172,653.60 = 68,524 : x
  2. Step 2: Convert to fraction form
    125,113.12/172,653.60 = 68,524/x
  3. Step 3: Cross multiply
    125,113.12x = 172,653.60 × 68,524
  4. Step 4: Simplify right side
    125,113.12x = 11,830,915,286.40
  5. Step 5: Solve for x
    x = 11,830,915,286.40/125,113.12
  6. Step 6: Final answer
    x = 94,561.75

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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.