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Finding the Fourth Proportional to 115,228.80, 172,859.40 and 36,334.80

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Solution

The fourth proportional to 115,228.80, 172,859.40 and 36,334.80 is: 54,507.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,228.80 : 172,859.40 = 36,334.80 : x
  2. Step 2: Convert to fraction form
    115,228.80/172,859.40 = 36,334.80/x
  3. Step 3: Cross multiply
    115,228.80x = 172,859.40 × 36,334.80
  4. Step 4: Simplify right side
    115,228.80x = 6,280,811,727.12
  5. Step 5: Solve for x
    x = 6,280,811,727.12/115,228.80
  6. Step 6: Final answer
    x = 54,507.31

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1.5x scale

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.