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Finding the Fourth Proportional to 125,199.48, 172,779.71 and 68,610.86

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Solution

The fourth proportional to 125,199.48, 172,779.71 and 68,610.86 is: 94,685.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,199.48 : 172,779.71 = 68,610.86 : x
  2. Step 2: Convert to fraction form
    125,199.48/172,779.71 = 68,610.86/x
  3. Step 3: Cross multiply
    125,199.48x = 172,779.71 × 68,610.86
  4. Step 4: Simplify right side
    125,199.48x = 11,854,563,286.70
  5. Step 5: Solve for x
    x = 11,854,563,286.70/125,199.48
  6. Step 6: Final answer
    x = 94,685.40

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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.