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Finding the Third Proportional to 58,357.88 and 128,145.75

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Solution

The third proportional to 58,357.88 and 128,145.75 is: 281,390.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,357.88 : 128,145.75 = 128,145.75 : x
  2. Step 2: Convert to fraction form
    58,357.88/128,145.75 = 128,145.75/x
  3. Step 3: Cross multiply
    58,357.88x = 128,145.75 × 128,145.75
  4. Step 4: Simplify right side
    58,357.88x = 16,421,333,243.06
  5. Step 5: Solve for x
    x = 16,421,333,243.06/58,357.88
  6. Step 6: Final answer
    x = 281,390.19

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Why These Related Problems?

These problems maintain the same ratio (2.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.