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Finding the Fourth Proportional to 125,159.60, 172,720.50 and 68,570.84

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Solution

The fourth proportional to 125,159.60, 172,720.50 and 68,570.84 is: 94,627.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,159.60 : 172,720.50 = 68,570.84 : x
  2. Step 2: Convert to fraction form
    125,159.60/172,720.50 = 68,570.84/x
  3. Step 3: Cross multiply
    125,159.60x = 172,720.50 × 68,570.84
  4. Step 4: Simplify right side
    125,159.60x = 11,843,589,770.22
  5. Step 5: Solve for x
    x = 11,843,589,770.22/125,159.60
  6. Step 6: Final answer
    x = 94,627.90

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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.