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Finding the Fourth Proportional to 112,796.87, 155,659.65 and 65,050.20

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Solution

The fourth proportional to 112,796.87, 155,659.65 and 65,050.20 is: 89,769.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,796.87 : 155,659.65 = 65,050.20 : x
  2. Step 2: Convert to fraction form
    112,796.87/155,659.65 = 65,050.20/x
  3. Step 3: Cross multiply
    112,796.87x = 155,659.65 × 65,050.20
  4. Step 4: Simplify right side
    112,796.87x = 10,125,691,364.43
  5. Step 5: Solve for x
    x = 10,125,691,364.43/112,796.87
  6. Step 6: Final answer
    x = 89,769.26

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.