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Finding the Fourth Proportional to 115,752.60, 173,628.90 and 80,731.80

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Solution

The fourth proportional to 115,752.60, 173,628.90 and 80,731.80 is: 121,097.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,752.60 : 173,628.90 = 80,731.80 : x
  2. Step 2: Convert to fraction form
    115,752.60/173,628.90 = 80,731.80/x
  3. Step 3: Cross multiply
    115,752.60x = 173,628.90 × 80,731.80
  4. Step 4: Simplify right side
    115,752.60x = 14,017,373,629.02
  5. Step 5: Solve for x
    x = 14,017,373,629.02/115,752.60
  6. Step 6: Final answer
    x = 121,097.70

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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.