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Finding the Third Proportional to 120,428 and 187,535

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Solution

The third proportional to 120,428 and 187,535 is: 292,036.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,428 : 187,535 = 187,535 : x
  2. Step 2: Convert to fraction form
    120,428/187,535 = 187,535/x
  3. Step 3: Cross multiply
    120,428x = 187,535 × 187,535
  4. Step 4: Simplify right side
    120,428x = 35,169,376,225
  5. Step 5: Solve for x
    x = 35,169,376,225/120,428
  6. Step 6: Final answer
    x = 292,036.54

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Why These Related Problems?

These problems maintain the same ratio (1.56) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.