Home / 121,272.34-181,896.89-57,215.57

Finding the Fourth Proportional to 121,272.34, 181,896.89 and 57,215.57

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Solution

The fourth proportional to 121,272.34, 181,896.89 and 57,215.57 is: 85,817.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,272.34 : 181,896.89 = 57,215.57 : x
  2. Step 2: Convert to fraction form
    121,272.34/181,896.89 = 57,215.57/x
  3. Step 3: Cross multiply
    121,272.34x = 181,896.89 × 57,215.57
  4. Step 4: Simplify right side
    121,272.34x = 10,407,333,368.85
  5. Step 5: Solve for x
    x = 10,407,333,368.85/121,272.34
  6. Step 6: Final answer
    x = 85,817.87

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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.