Home / 121,528.80-167,705.37-76,231.17

Finding the Fourth Proportional to 121,528.80, 167,705.37 and 76,231.17

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Solution

The fourth proportional to 121,528.80, 167,705.37 and 76,231.17 is: 105,196.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,528.80 : 167,705.37 = 76,231.17 : x
  2. Step 2: Convert to fraction form
    121,528.80/167,705.37 = 76,231.17/x
  3. Step 3: Cross multiply
    121,528.80x = 167,705.37 × 76,231.17
  4. Step 4: Simplify right side
    121,528.80x = 12,784,376,570.38
  5. Step 5: Solve for x
    x = 12,784,376,570.38/121,528.80
  6. Step 6: Final answer
    x = 105,196.27

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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.