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Finding the Fourth Proportional to 125,191.69, 172,764.61 and 68,603.06

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Solution

The fourth proportional to 125,191.69, 172,764.61 and 68,603.06 is: 94,672.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,191.69 : 172,764.61 = 68,603.06 : x
  2. Step 2: Convert to fraction form
    125,191.69/172,764.61 = 68,603.06/x
  3. Step 3: Cross multiply
    125,191.69x = 172,764.61 × 68,603.06
  4. Step 4: Simplify right side
    125,191.69x = 11,852,181,166.11
  5. Step 5: Solve for x
    x = 11,852,181,166.11/125,191.69
  6. Step 6: Final answer
    x = 94,672.27

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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.