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Finding the Fourth Proportional to 125,076.72, 172,605.95 and 67,716.06

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Solution

The fourth proportional to 125,076.72, 172,605.95 and 67,716.06 is: 93,448.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,076.72 : 172,605.95 = 67,716.06 : x
  2. Step 2: Convert to fraction form
    125,076.72/172,605.95 = 67,716.06/x
  3. Step 3: Cross multiply
    125,076.72x = 172,605.95 × 67,716.06
  4. Step 4: Simplify right side
    125,076.72x = 11,688,194,527.98
  5. Step 5: Solve for x
    x = 11,688,194,527.98/125,076.72
  6. Step 6: Final answer
    x = 93,448.20

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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.