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Finding the Fourth Proportional to 125,290.94, 172,902.68 and 67,930.11

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Solution

The fourth proportional to 125,290.94, 172,902.68 and 67,930.11 is: 93,744.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,290.94 : 172,902.68 = 67,930.11 : x
  2. Step 2: Convert to fraction form
    125,290.94/172,902.68 = 67,930.11/x
  3. Step 3: Cross multiply
    125,290.94x = 172,902.68 × 67,930.11
  4. Step 4: Simplify right side
    125,290.94x = 11,745,298,071.69
  5. Step 5: Solve for x
    x = 11,745,298,071.69/125,290.94
  6. Step 6: Final answer
    x = 93,744.19

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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.