Home / 121,272.72-181,968.96-54,759.12

Finding the Fourth Proportional to 121,272.72, 181,968.96 and 54,759.12

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Solution

The fourth proportional to 121,272.72, 181,968.96 and 54,759.12 is: 82,165.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,272.72 : 181,968.96 = 54,759.12 : x
  2. Step 2: Convert to fraction form
    121,272.72/181,968.96 = 54,759.12/x
  3. Step 3: Cross multiply
    121,272.72x = 181,968.96 × 54,759.12
  4. Step 4: Simplify right side
    121,272.72x = 9,964,460,116.92
  5. Step 5: Solve for x
    x = 9,964,460,116.92/121,272.72
  6. Step 6: Final answer
    x = 82,165.72

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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.