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Finding the Fourth Proportional to 125,352.95, 172,987.10 and 68,764.32

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Solution

The fourth proportional to 125,352.95, 172,987.10 and 68,764.32 is: 94,894.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,352.95 : 172,987.10 = 68,764.32 : x
  2. Step 2: Convert to fraction form
    125,352.95/172,987.10 = 68,764.32/x
  3. Step 3: Cross multiply
    125,352.95x = 172,987.10 × 68,764.32
  4. Step 4: Simplify right side
    125,352.95x = 11,895,339,956.45
  5. Step 5: Solve for x
    x = 11,895,339,956.45/125,352.95
  6. Step 6: Final answer
    x = 94,894.78

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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.