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Finding the Fourth Proportional to 125,763.86, 173,543.76 and 74,072.90

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Solution

The fourth proportional to 125,763.86, 173,543.76 and 74,072.90 is: 102,214.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,763.86 : 173,543.76 = 74,072.90 : x
  2. Step 2: Convert to fraction form
    125,763.86/173,543.76 = 74,072.90/x
  3. Step 3: Cross multiply
    125,763.86x = 173,543.76 × 74,072.90
  4. Step 4: Simplify right side
    125,763.86x = 12,854,888,712.39
  5. Step 5: Solve for x
    x = 12,854,888,712.39/125,763.86
  6. Step 6: Final answer
    x = 102,214.49

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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.