Home / 136,918.59-188,940.90-76,477.20

Finding the Fourth Proportional to 136,918.59, 188,940.90 and 76,477.20

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Solution

The fourth proportional to 136,918.59, 188,940.90 and 76,477.20 is: 105,534.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,918.59 : 188,940.90 = 76,477.20 : x
  2. Step 2: Convert to fraction form
    136,918.59/188,940.90 = 76,477.20/x
  3. Step 3: Cross multiply
    136,918.59x = 188,940.90 × 76,477.20
  4. Step 4: Simplify right side
    136,918.59x = 14,449,670,997.48
  5. Step 5: Solve for x
    x = 14,449,670,997.48/136,918.59
  6. Step 6: Final answer
    x = 105,534.76

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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.