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Finding the Fourth Proportional to 115,599.80, 173,399.70 and 36,720.20

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Solution

The fourth proportional to 115,599.80, 173,399.70 and 36,720.20 is: 55,080.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,599.80 : 173,399.70 = 36,720.20 : x
  2. Step 2: Convert to fraction form
    115,599.80/173,399.70 = 36,720.20/x
  3. Step 3: Cross multiply
    115,599.80x = 173,399.70 × 36,720.20
  4. Step 4: Simplify right side
    115,599.80x = 6,367,271,663.94
  5. Step 5: Solve for x
    x = 6,367,271,663.94/115,599.80
  6. Step 6: Final answer
    x = 55,080.30

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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.