Home / 115,501.48-172,940.74-75,421.19

Finding the Fourth Proportional to 115,501.48, 172,940.74 and 75,421.19

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Solution

The fourth proportional to 115,501.48, 172,940.74 and 75,421.19 is: 112,928.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,501.48 : 172,940.74 = 75,421.19 : x
  2. Step 2: Convert to fraction form
    115,501.48/172,940.74 = 75,421.19/x
  3. Step 3: Cross multiply
    115,501.48x = 172,940.74 × 75,421.19
  4. Step 4: Simplify right side
    115,501.48x = 13,043,396,410.28
  5. Step 5: Solve for x
    x = 13,043,396,410.28/115,501.48
  6. Step 6: Final answer
    x = 112,928.39

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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.