Home / 136,220.12-187,980.18-75,790.88

Finding the Fourth Proportional to 136,220.12, 187,980.18 and 75,790.88

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Solution

The fourth proportional to 136,220.12, 187,980.18 and 75,790.88 is: 104,589.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,220.12 : 187,980.18 = 75,790.88 : x
  2. Step 2: Convert to fraction form
    136,220.12/187,980.18 = 75,790.88/x
  3. Step 3: Cross multiply
    136,220.12x = 187,980.18 × 75,790.88
  4. Step 4: Simplify right side
    136,220.12x = 14,247,183,264.76
  5. Step 5: Solve for x
    x = 14,247,183,264.76/136,220.12
  6. Step 6: Final answer
    x = 104,589.42

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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.