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Finding the Fourth Proportional to 115,983.60, 173,991.60 and 49,423.20

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Solution

The fourth proportional to 115,983.60, 173,991.60 and 49,423.20 is: 74,141.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,983.60 : 173,991.60 = 49,423.20 : x
  2. Step 2: Convert to fraction form
    115,983.60/173,991.60 = 49,423.20/x
  3. Step 3: Cross multiply
    115,983.60x = 173,991.60 × 49,423.20
  4. Step 4: Simplify right side
    115,983.60x = 8,599,221,645.12
  5. Step 5: Solve for x
    x = 8,599,221,645.12/115,983.60
  6. Step 6: Final answer
    x = 74,141.70

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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.