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Finding the Fourth Proportional to 115,554.60, 173,145.60 and 65,485.80

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Solution

The fourth proportional to 115,554.60, 173,145.60 and 65,485.80 is: 98,123.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,554.60 : 173,145.60 = 65,485.80 : x
  2. Step 2: Convert to fraction form
    115,554.60/173,145.60 = 65,485.80/x
  3. Step 3: Cross multiply
    115,554.60x = 173,145.60 × 65,485.80
  4. Step 4: Simplify right side
    115,554.60x = 11,338,578,132.48
  5. Step 5: Solve for x
    x = 11,338,578,132.48/115,554.60
  6. Step 6: Final answer
    x = 98,123.12

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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.