Home / 126,492.40-189,617.10-73,129.60

Finding the Fourth Proportional to 126,492.40, 189,617.10 and 73,129.60

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Solution

The fourth proportional to 126,492.40, 189,617.10 and 73,129.60 is: 109,624.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,492.40 : 189,617.10 = 73,129.60 : x
  2. Step 2: Convert to fraction form
    126,492.40/189,617.10 = 73,129.60/x
  3. Step 3: Cross multiply
    126,492.40x = 189,617.10 × 73,129.60
  4. Step 4: Simplify right side
    126,492.40x = 13,866,622,676.16
  5. Step 5: Solve for x
    x = 13,866,622,676.16/126,492.40
  6. Step 6: Final answer
    x = 109,624.16

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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.