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Finding the Fourth Proportional to 144,046.40, 215,810.40 and 123,310.40

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Solution

The fourth proportional to 144,046.40, 215,810.40 and 123,310.40 is: 184,743.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,046.40 : 215,810.40 = 123,310.40 : x
  2. Step 2: Convert to fraction form
    144,046.40/215,810.40 = 123,310.40/x
  3. Step 3: Cross multiply
    144,046.40x = 215,810.40 × 123,310.40
  4. Step 4: Simplify right side
    144,046.40x = 26,611,666,748.16
  5. Step 5: Solve for x
    x = 26,611,666,748.16/144,046.40
  6. Step 6: Final answer
    x = 184,743.71

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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.