Home / 172,272.79-258,486.06-87,988.57

Finding the Fourth Proportional to 172,272.79, 258,486.06 and 87,988.57

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Solution

The fourth proportional to 172,272.79, 258,486.06 and 87,988.57 is: 132,022.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,272.79 : 258,486.06 = 87,988.57 : x
  2. Step 2: Convert to fraction form
    172,272.79/258,486.06 = 87,988.57/x
  3. Step 3: Cross multiply
    172,272.79x = 258,486.06 × 87,988.57
  4. Step 4: Simplify right side
    172,272.79x = 22,743,818,784.33
  5. Step 5: Solve for x
    x = 22,743,818,784.33/172,272.79
  6. Step 6: Final answer
    x = 132,022.12

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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.