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Finding the Fourth Proportional to 115,401.80, 173,102.70 and 96,739.40

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Solution

The fourth proportional to 115,401.80, 173,102.70 and 96,739.40 is: 145,109.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,401.80 : 173,102.70 = 96,739.40 : x
  2. Step 2: Convert to fraction form
    115,401.80/173,102.70 = 96,739.40/x
  3. Step 3: Cross multiply
    115,401.80x = 173,102.70 × 96,739.40
  4. Step 4: Simplify right side
    115,401.80x = 16,745,851,336.38
  5. Step 5: Solve for x
    x = 16,745,851,336.38/115,401.80
  6. Step 6: Final answer
    x = 145,109.10

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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.