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Finding the Fourth Proportional to 115,878.60, 173,688.30 and 65,982.60

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Solution

The fourth proportional to 115,878.60, 173,688.30 and 65,982.60 is: 98,900.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,878.60 : 173,688.30 = 65,982.60 : x
  2. Step 2: Convert to fraction form
    115,878.60/173,688.30 = 65,982.60/x
  3. Step 3: Cross multiply
    115,878.60x = 173,688.30 × 65,982.60
  4. Step 4: Simplify right side
    115,878.60x = 11,460,405,623.58
  5. Step 5: Solve for x
    x = 11,460,405,623.58/115,878.60
  6. Step 6: Final answer
    x = 98,900.10

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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.