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Finding the Fourth Proportional to 125,878.46, 173,707.13 and 72,126.09

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Solution

The fourth proportional to 125,878.46, 173,707.13 and 72,126.09 is: 99,531.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,878.46 : 173,707.13 = 72,126.09 : x
  2. Step 2: Convert to fraction form
    125,878.46/173,707.13 = 72,126.09/x
  3. Step 3: Cross multiply
    125,878.46x = 173,707.13 × 72,126.09
  4. Step 4: Simplify right side
    125,878.46x = 12,528,815,731.39
  5. Step 5: Solve for x
    x = 12,528,815,731.39/125,878.46
  6. Step 6: Final answer
    x = 99,531.06

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.