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Finding the Fourth Proportional to 115,617.60, 173,311.20 and 53,179.20

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Solution

The fourth proportional to 115,617.60, 173,311.20 and 53,179.20 is: 79,715.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,617.60 : 173,311.20 = 53,179.20 : x
  2. Step 2: Convert to fraction form
    115,617.60/173,311.20 = 53,179.20/x
  3. Step 3: Cross multiply
    115,617.60x = 173,311.20 × 53,179.20
  4. Step 4: Simplify right side
    115,617.60x = 9,216,550,967.04
  5. Step 5: Solve for x
    x = 9,216,550,967.04/115,617.60
  6. Step 6: Final answer
    x = 79,715.81

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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.