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Finding the Fourth Proportional to 125,178.60, 172,746.54 and 68,589.96

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Solution

The fourth proportional to 125,178.60, 172,746.54 and 68,589.96 is: 94,654.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,178.60 : 172,746.54 = 68,589.96 : x
  2. Step 2: Convert to fraction form
    125,178.60/172,746.54 = 68,589.96/x
  3. Step 3: Cross multiply
    125,178.60x = 172,746.54 × 68,589.96
  4. Step 4: Simplify right side
    125,178.60x = 11,848,678,268.74
  5. Step 5: Solve for x
    x = 11,848,678,268.74/125,178.60
  6. Step 6: Final answer
    x = 94,654.18

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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.