Home / 115,535.10-172,918.65-83,855.10

Finding the Fourth Proportional to 115,535.10, 172,918.65 and 83,855.10

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Solution

The fourth proportional to 115,535.10, 172,918.65 and 83,855.10 is: 125,503.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,535.10 : 172,918.65 = 83,855.10 : x
  2. Step 2: Convert to fraction form
    115,535.10/172,918.65 = 83,855.10/x
  3. Step 3: Cross multiply
    115,535.10x = 172,918.65 × 83,855.10
  4. Step 4: Simplify right side
    115,535.10x = 14,500,110,687.62
  5. Step 5: Solve for x
    x = 14,500,110,687.62/115,535.10
  6. Step 6: Final answer
    x = 125,503.94

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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.