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Finding the Fourth Proportional to 115,368.60, 172,866.60 and 65,299.80

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Solution

The fourth proportional to 115,368.60, 172,866.60 and 65,299.80 is: 97,844.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,368.60 : 172,866.60 = 65,299.80 : x
  2. Step 2: Convert to fraction form
    115,368.60/172,866.60 = 65,299.80/x
  3. Step 3: Cross multiply
    115,368.60x = 172,866.60 × 65,299.80
  4. Step 4: Simplify right side
    115,368.60x = 11,288,154,406.68
  5. Step 5: Solve for x
    x = 11,288,154,406.68/115,368.60
  6. Step 6: Final answer
    x = 97,844.25

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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.