Home / 158,115.21-236,792.78-90,442.10

Finding the Fourth Proportional to 158,115.21, 236,792.78 and 90,442.10

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Solution

The fourth proportional to 158,115.21, 236,792.78 and 90,442.10 is: 135,445.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,115.21 : 236,792.78 = 90,442.10 : x
  2. Step 2: Convert to fraction form
    158,115.21/236,792.78 = 90,442.10/x
  3. Step 3: Cross multiply
    158,115.21x = 236,792.78 × 90,442.10
  4. Step 4: Simplify right side
    158,115.21x = 21,416,034,651.86
  5. Step 5: Solve for x
    x = 21,416,034,651.86/158,115.21
  6. Step 6: Final answer
    x = 135,445.76

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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.