Home / 136,969.50-189,017.48-76,540.20

Finding the Fourth Proportional to 136,969.50, 189,017.48 and 76,540.20

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Solution

The fourth proportional to 136,969.50, 189,017.48 and 76,540.20 is: 105,625.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,969.50 : 189,017.48 = 76,540.20 : x
  2. Step 2: Convert to fraction form
    136,969.50/189,017.48 = 76,540.20/x
  3. Step 3: Cross multiply
    136,969.50x = 189,017.48 × 76,540.20
  4. Step 4: Simplify right side
    136,969.50x = 14,467,435,722.70
  5. Step 5: Solve for x
    x = 14,467,435,722.70/136,969.50
  6. Step 6: Final answer
    x = 105,625.24

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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.