Home / 115,007.76-172,499.33-40,129.32

Finding the Fourth Proportional to 115,007.76, 172,499.33 and 40,129.32

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Solution

The fourth proportional to 115,007.76, 172,499.33 and 40,129.32 is: 60,189.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,007.76 : 172,499.33 = 40,129.32 : x
  2. Step 2: Convert to fraction form
    115,007.76/172,499.33 = 40,129.32/x
  3. Step 3: Cross multiply
    115,007.76x = 172,499.33 × 40,129.32
  4. Step 4: Simplify right side
    115,007.76x = 6,922,280,671.31
  5. Step 5: Solve for x
    x = 6,922,280,671.31/115,007.76
  6. Step 6: Final answer
    x = 60,189.69

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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.