Home / 120,016.10-165,621.70-66,301.12

Finding the Fourth Proportional to 120,016.10, 165,621.70 and 66,301.12

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Solution

The fourth proportional to 120,016.10, 165,621.70 and 66,301.12 is: 91,495.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,016.10 : 165,621.70 = 66,301.12 : x
  2. Step 2: Convert to fraction form
    120,016.10/165,621.70 = 66,301.12/x
  3. Step 3: Cross multiply
    120,016.10x = 165,621.70 × 66,301.12
  4. Step 4: Simplify right side
    120,016.10x = 10,980,903,626.50
  5. Step 5: Solve for x
    x = 10,980,903,626.50/120,016.10
  6. Step 6: Final answer
    x = 91,495.25

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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.