Home / 115,325.80-172,643.10-108,490.60

Finding the Fourth Proportional to 115,325.80, 172,643.10 and 108,490.60

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Solution

The fourth proportional to 115,325.80, 172,643.10 and 108,490.60 is: 162,410.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,325.80 : 172,643.10 = 108,490.60 : x
  2. Step 2: Convert to fraction form
    115,325.80/172,643.10 = 108,490.60/x
  3. Step 3: Cross multiply
    115,325.80x = 172,643.10 × 108,490.60
  4. Step 4: Simplify right side
    115,325.80x = 18,730,153,504.86
  5. Step 5: Solve for x
    x = 18,730,153,504.86/115,325.80
  6. Step 6: Final answer
    x = 162,410.78

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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.