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Finding the Fourth Proportional to 111,690.68, 154,133.48 and 63,944.39

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Solution

The fourth proportional to 111,690.68, 154,133.48 and 63,944.39 is: 88,243.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,690.68 : 154,133.48 = 63,944.39 : x
  2. Step 2: Convert to fraction form
    111,690.68/154,133.48 = 63,944.39/x
  3. Step 3: Cross multiply
    111,690.68x = 154,133.48 × 63,944.39
  4. Step 4: Simplify right side
    111,690.68x = 9,855,970,266.79
  5. Step 5: Solve for x
    x = 9,855,970,266.79/111,690.68
  6. Step 6: Final answer
    x = 88,243.45

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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.