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Finding the Fourth Proportional to 100,004.96, 138,023.68 and 57,555.68

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Solution

The fourth proportional to 100,004.96, 138,023.68 and 57,555.68 is: 79,436.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,004.96 : 138,023.68 = 57,555.68 : x
  2. Step 2: Convert to fraction form
    100,004.96/138,023.68 = 57,555.68/x
  3. Step 3: Cross multiply
    100,004.96x = 138,023.68 × 57,555.68
  4. Step 4: Simplify right side
    100,004.96x = 7,944,046,758.50
  5. Step 5: Solve for x
    x = 7,944,046,758.50/100,004.96
  6. Step 6: Final answer
    x = 79,436.53

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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.