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Finding the Fourth Proportional to 72,183, 108,272.68 and 19,591.12

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Solution

The fourth proportional to 72,183, 108,272.68 and 19,591.12 is: 29,386.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,183 : 108,272.68 = 19,591.12 : x
  2. Step 2: Convert to fraction form
    72,183/108,272.68 = 19,591.12/x
  3. Step 3: Cross multiply
    72,183x = 108,272.68 × 19,591.12
  4. Step 4: Simplify right side
    72,183x = 2,121,182,746.94
  5. Step 5: Solve for x
    x = 2,121,182,746.94/72,183
  6. Step 6: Final answer
    x = 29,386.18

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Double scale
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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.