Home / 136,838.28-188,814.30-76,399.22

Finding the Fourth Proportional to 136,838.28, 188,814.30 and 76,399.22

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Solution

The fourth proportional to 136,838.28, 188,814.30 and 76,399.22 is: 105,418.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,838.28 : 188,814.30 = 76,399.22 : x
  2. Step 2: Convert to fraction form
    136,838.28/188,814.30 = 76,399.22/x
  3. Step 3: Cross multiply
    136,838.28x = 188,814.30 × 76,399.22
  4. Step 4: Simplify right side
    136,838.28x = 14,425,265,244.85
  5. Step 5: Solve for x
    x = 14,425,265,244.85/136,838.28
  6. Step 6: Final answer
    x = 105,418.35

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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.