Home / 136,918.15-188,940.30-76,476.76

Finding the Fourth Proportional to 136,918.15, 188,940.30 and 76,476.76

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Solution

The fourth proportional to 136,918.15, 188,940.30 and 76,476.76 is: 105,534.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,918.15 : 188,940.30 = 76,476.76 : x
  2. Step 2: Convert to fraction form
    136,918.15/188,940.30 = 76,476.76/x
  3. Step 3: Cross multiply
    136,918.15x = 188,940.30 × 76,476.76
  4. Step 4: Simplify right side
    136,918.15x = 14,449,541,218.29
  5. Step 5: Solve for x
    x = 14,449,541,218.29/136,918.15
  6. Step 6: Final answer
    x = 105,534.16

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1.5x scale

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.