Home / 136,919.08-188,929.68-76,482.04

Finding the Fourth Proportional to 136,919.08, 188,929.68 and 76,482.04

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Solution

The fourth proportional to 136,919.08, 188,929.68 and 76,482.04 is: 105,534.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,919.08 : 188,929.68 = 76,482.04 : x
  2. Step 2: Convert to fraction form
    136,919.08/188,929.68 = 76,482.04/x
  3. Step 3: Cross multiply
    136,919.08x = 188,929.68 × 76,482.04
  4. Step 4: Simplify right side
    136,919.08x = 14,449,727,342.95
  5. Step 5: Solve for x
    x = 14,449,727,342.95/136,919.08
  6. Step 6: Final answer
    x = 105,534.80

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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.