Home / 136,934.72-188,937.53-79,539.94

Finding the Fourth Proportional to 136,934.72, 188,937.53 and 79,539.94

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Solution

The fourth proportional to 136,934.72, 188,937.53 and 79,539.94 is: 109,746.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,934.72 : 188,937.53 = 79,539.94 : x
  2. Step 2: Convert to fraction form
    136,934.72/188,937.53 = 79,539.94/x
  3. Step 3: Cross multiply
    136,934.72x = 188,937.53 × 79,539.94
  4. Step 4: Simplify right side
    136,934.72x = 15,028,079,799.95
  5. Step 5: Solve for x
    x = 15,028,079,799.95/136,934.72
  6. Step 6: Final answer
    x = 109,746.31

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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.