Home / 126,116.10-189,174.15-105,840.90

Finding the Fourth Proportional to 126,116.10, 189,174.15 and 105,840.90

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Solution

The fourth proportional to 126,116.10, 189,174.15 and 105,840.90 is: 158,761.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,116.10 : 189,174.15 = 105,840.90 : x
  2. Step 2: Convert to fraction form
    126,116.10/189,174.15 = 105,840.90/x
  3. Step 3: Cross multiply
    126,116.10x = 189,174.15 × 105,840.90
  4. Step 4: Simplify right side
    126,116.10x = 20,022,362,292.74
  5. Step 5: Solve for x
    x = 20,022,362,292.74/126,116.10
  6. Step 6: Final answer
    x = 158,761.35

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.