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Finding the Fourth Proportional to 111,818.60, 167,727.90 and 103,945.40

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Solution

The fourth proportional to 111,818.60, 167,727.90 and 103,945.40 is: 155,918.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,818.60 : 167,727.90 = 103,945.40 : x
  2. Step 2: Convert to fraction form
    111,818.60/167,727.90 = 103,945.40/x
  3. Step 3: Cross multiply
    111,818.60x = 167,727.90 × 103,945.40
  4. Step 4: Simplify right side
    111,818.60x = 17,434,543,656.66
  5. Step 5: Solve for x
    x = 17,434,543,656.66/111,818.60
  6. Step 6: Final answer
    x = 155,918.10

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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.