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Finding the Fourth Proportional to 115,321.34, 172,980.98 and 36,435.56

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Solution

The fourth proportional to 115,321.34, 172,980.98 and 36,435.56 is: 54,653.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,321.34 : 172,980.98 = 36,435.56 : x
  2. Step 2: Convert to fraction form
    115,321.34/172,980.98 = 36,435.56/x
  3. Step 3: Cross multiply
    115,321.34x = 172,980.98 × 36,435.56
  4. Step 4: Simplify right side
    115,321.34x = 6,302,659,125.92
  5. Step 5: Solve for x
    x = 6,302,659,125.92/115,321.34
  6. Step 6: Final answer
    x = 54,653.02

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1.5x scale

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.