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Finding the Fourth Proportional to 124,996.68, 172,495.71 and 68,411.70

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Solution

The fourth proportional to 124,996.68, 172,495.71 and 68,411.70 is: 94,408.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,996.68 : 172,495.71 = 68,411.70 : x
  2. Step 2: Convert to fraction form
    124,996.68/172,495.71 = 68,411.70/x
  3. Step 3: Cross multiply
    124,996.68x = 172,495.71 × 68,411.70
  4. Step 4: Simplify right side
    124,996.68x = 11,800,724,763.81
  5. Step 5: Solve for x
    x = 11,800,724,763.81/124,996.68
  6. Step 6: Final answer
    x = 94,408.31

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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.