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Finding the Fourth Proportional to 136,230, 204,345.89 and 47,485.19

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Solution

The fourth proportional to 136,230, 204,345.89 and 47,485.19 is: 71,228.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,230 : 204,345.89 = 47,485.19 : x
  2. Step 2: Convert to fraction form
    136,230/204,345.89 = 47,485.19/x
  3. Step 3: Cross multiply
    136,230x = 204,345.89 × 47,485.19
  4. Step 4: Simplify right side
    136,230x = 9,703,402,153.21
  5. Step 5: Solve for x
    x = 9,703,402,153.21/136,230
  6. Step 6: Final answer
    x = 71,228.09

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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.