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Finding the Fourth Proportional to 159,785.69, 220,615.73 and 99,383.48

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Solution

The fourth proportional to 159,785.69, 220,615.73 and 99,383.48 is: 137,218.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,785.69 : 220,615.73 = 99,383.48 : x
  2. Step 2: Convert to fraction form
    159,785.69/220,615.73 = 99,383.48/x
  3. Step 3: Cross multiply
    159,785.69x = 220,615.73 × 99,383.48
  4. Step 4: Simplify right side
    159,785.69x = 21,925,558,931.11
  5. Step 5: Solve for x
    x = 21,925,558,931.11/159,785.69
  6. Step 6: Final answer
    x = 137,218.54

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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.