Home / 121,228.84-167,365.20-81,010.72

Finding the Fourth Proportional to 121,228.84, 167,365.20 and 81,010.72

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Solution

The fourth proportional to 121,228.84, 167,365.20 and 81,010.72 is: 111,841.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,228.84 : 167,365.20 = 81,010.72 : x
  2. Step 2: Convert to fraction form
    121,228.84/167,365.20 = 81,010.72/x
  3. Step 3: Cross multiply
    121,228.84x = 167,365.20 × 81,010.72
  4. Step 4: Simplify right side
    121,228.84x = 13,558,375,354.94
  5. Step 5: Solve for x
    x = 13,558,375,354.94/121,228.84
  6. Step 6: Final answer
    x = 111,841.17

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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.