Home / 115,426.80-173,140.20-53,218.80

Finding the Fourth Proportional to 115,426.80, 173,140.20 and 53,218.80

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Solution

The fourth proportional to 115,426.80, 173,140.20 and 53,218.80 is: 79,828.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,426.80 : 173,140.20 = 53,218.80 : x
  2. Step 2: Convert to fraction form
    115,426.80/173,140.20 = 53,218.80/x
  3. Step 3: Cross multiply
    115,426.80x = 173,140.20 × 53,218.80
  4. Step 4: Simplify right side
    115,426.80x = 9,214,313,675.76
  5. Step 5: Solve for x
    x = 9,214,313,675.76/115,426.80
  6. Step 6: Final answer
    x = 79,828.20

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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.