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Finding the Fourth Proportional to 115,356.60, 172,848.60 and 65,287.80

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Solution

The fourth proportional to 115,356.60, 172,848.60 and 65,287.80 is: 97,826.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,356.60 : 172,848.60 = 65,287.80 : x
  2. Step 2: Convert to fraction form
    115,356.60/172,848.60 = 65,287.80/x
  3. Step 3: Cross multiply
    115,356.60x = 172,848.60 × 65,287.80
  4. Step 4: Simplify right side
    115,356.60x = 11,284,904,827.08
  5. Step 5: Solve for x
    x = 11,284,904,827.08/115,356.60
  6. Step 6: Final answer
    x = 97,826.26

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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.