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Finding the Fourth Proportional to 115,165.08, 172,743.48 and 40,285.08

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Solution

The fourth proportional to 115,165.08, 172,743.48 and 40,285.08 is: 60,426.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,165.08 : 172,743.48 = 40,285.08 : x
  2. Step 2: Convert to fraction form
    115,165.08/172,743.48 = 40,285.08/x
  3. Step 3: Cross multiply
    115,165.08x = 172,743.48 × 40,285.08
  4. Step 4: Simplify right side
    115,165.08x = 6,958,984,911.28
  5. Step 5: Solve for x
    x = 6,958,984,911.28/115,165.08
  6. Step 6: Final answer
    x = 60,426.17

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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.