Home / 115,287.60-172,899-56,125.20

Finding the Fourth Proportional to 115,287.60, 172,899 and 56,125.20

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Solution

The fourth proportional to 115,287.60, 172,899 and 56,125.20 is: 84,172.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,287.60 : 172,899 = 56,125.20 : x
  2. Step 2: Convert to fraction form
    115,287.60/172,899 = 56,125.20/x
  3. Step 3: Cross multiply
    115,287.60x = 172,899 × 56,125.20
  4. Step 4: Simplify right side
    115,287.60x = 9,703,990,954.80
  5. Step 5: Solve for x
    x = 9,703,990,954.80/115,287.60
  6. Step 6: Final answer
    x = 84,172.03

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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.