Home / 136,943.64-188,980.16-76,515.12

Finding the Fourth Proportional to 136,943.64, 188,980.16 and 76,515.12

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Solution

The fourth proportional to 136,943.64, 188,980.16 and 76,515.12 is: 105,589.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,943.64 : 188,980.16 = 76,515.12 : x
  2. Step 2: Convert to fraction form
    136,943.64/188,980.16 = 76,515.12/x
  3. Step 3: Cross multiply
    136,943.64x = 188,980.16 × 76,515.12
  4. Step 4: Simplify right side
    136,943.64x = 14,459,839,237.44
  5. Step 5: Solve for x
    x = 14,459,839,237.44/136,943.64
  6. Step 6: Final answer
    x = 105,589.71

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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.