Home / 120,220.08-165,899.66-65,772.02

Finding the Fourth Proportional to 120,220.08, 165,899.66 and 65,772.02

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Solution

The fourth proportional to 120,220.08, 165,899.66 and 65,772.02 is: 90,763.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,220.08 : 165,899.66 = 65,772.02 : x
  2. Step 2: Convert to fraction form
    120,220.08/165,899.66 = 65,772.02/x
  3. Step 3: Cross multiply
    120,220.08x = 165,899.66 × 65,772.02
  4. Step 4: Simplify right side
    120,220.08x = 10,911,554,597.15
  5. Step 5: Solve for x
    x = 10,911,554,597.15/120,220.08
  6. Step 6: Final answer
    x = 90,763.16

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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.