Home / 115,269.40-172,904.10-72,004.60

Finding the Fourth Proportional to 115,269.40, 172,904.10 and 72,004.60

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Solution

The fourth proportional to 115,269.40, 172,904.10 and 72,004.60 is: 108,006.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,269.40 : 172,904.10 = 72,004.60 : x
  2. Step 2: Convert to fraction form
    115,269.40/172,904.10 = 72,004.60/x
  3. Step 3: Cross multiply
    115,269.40x = 172,904.10 × 72,004.60
  4. Step 4: Simplify right side
    115,269.40x = 12,449,890,558.86
  5. Step 5: Solve for x
    x = 12,449,890,558.86/115,269.40
  6. Step 6: Final answer
    x = 108,006.90

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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.