Home / 115,070.92-172,408.33-89,820.79

Finding the Fourth Proportional to 115,070.92, 172,408.33 and 89,820.79

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Solution

The fourth proportional to 115,070.92, 172,408.33 and 89,820.79 is: 134,576.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,070.92 : 172,408.33 = 89,820.79 : x
  2. Step 2: Convert to fraction form
    115,070.92/172,408.33 = 89,820.79/x
  3. Step 3: Cross multiply
    115,070.92x = 172,408.33 × 89,820.79
  4. Step 4: Simplify right side
    115,070.92x = 15,485,852,403.18
  5. Step 5: Solve for x
    x = 15,485,852,403.18/115,070.92
  6. Step 6: Final answer
    x = 134,576.59

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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.