Home / 155,971.67-215,243.00-87,988.44

Finding the Fourth Proportional to 155,971.67, 215,243.00 and 87,988.44

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Solution

The fourth proportional to 155,971.67, 215,243.00 and 87,988.44 is: 121,425.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,971.67 : 215,243.00 = 87,988.44 : x
  2. Step 2: Convert to fraction form
    155,971.67/215,243.00 = 87,988.44/x
  3. Step 3: Cross multiply
    155,971.67x = 215,243.00 × 87,988.44
  4. Step 4: Simplify right side
    155,971.67x = 18,938,896,010.89
  5. Step 5: Solve for x
    x = 18,938,896,010.89/155,971.67
  6. Step 6: Final answer
    x = 121,425.23

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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.