Home / 136,600.20-188,503.32-79,240.66

Finding the Fourth Proportional to 136,600.20, 188,503.32 and 79,240.66

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Solution

The fourth proportional to 136,600.20, 188,503.32 and 79,240.66 is: 109,349.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,600.20 : 188,503.32 = 79,240.66 : x
  2. Step 2: Convert to fraction form
    136,600.20/188,503.32 = 79,240.66/x
  3. Step 3: Cross multiply
    136,600.20x = 188,503.32 × 79,240.66
  4. Step 4: Simplify right side
    136,600.20x = 14,937,127,488.99
  5. Step 5: Solve for x
    x = 14,937,127,488.99/136,600.20
  6. Step 6: Final answer
    x = 109,349.24

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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.