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Finding the Fourth Proportional to 125,886, 173,720.52 and 72,169.68

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Solution

The fourth proportional to 125,886, 173,720.52 and 72,169.68 is: 99,592.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,886 : 173,720.52 = 72,169.68 : x
  2. Step 2: Convert to fraction form
    125,886/173,720.52 = 72,169.68/x
  3. Step 3: Cross multiply
    125,886x = 173,720.52 × 72,169.68
  4. Step 4: Simplify right side
    125,886x = 12,537,354,337.83
  5. Step 5: Solve for x
    x = 12,537,354,337.83/125,886
  6. Step 6: Final answer
    x = 99,592.92

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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.