Home / 103,670.43-155,505.37-28,790.61

Finding the Fourth Proportional to 103,670.43, 155,505.37 and 28,790.61

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Solution

The fourth proportional to 103,670.43, 155,505.37 and 28,790.61 is: 43,185.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,670.43 : 155,505.37 = 28,790.61 : x
  2. Step 2: Convert to fraction form
    103,670.43/155,505.37 = 28,790.61/x
  3. Step 3: Cross multiply
    103,670.43x = 155,505.37 × 28,790.61
  4. Step 4: Simplify right side
    103,670.43x = 4,477,094,460.58
  5. Step 5: Solve for x
    x = 4,477,094,460.58/103,670.43
  6. Step 6: Final answer
    x = 43,185.84

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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.